Todorović, Aleksandar

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Measurement of dental crown wear-In vitro study

Vlatkovic Jakovljević, Ivana; Todorović, Aleksandar; Budak, Igor; Sokac, Mario; Miličić, Biljana; Špadijer-Gostović, Aleksandra

(Japanese Soc Dental Materials Devices, Tokyo, 2020)

TY  - JOUR
AU  - Vlatkovic Jakovljević, Ivana
AU  - Todorović, Aleksandar
AU  - Budak, Igor
AU  - Sokac, Mario
AU  - Miličić, Biljana
AU  - Špadijer-Gostović, Aleksandra
PY  - 2020
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2516
AB  - The purpose of the study was to test new method for in vitro evaluation of dental material wear with 3D digitization procedure. Thirty dental crowns, made of polyetheretherketone and veneered with composite material, were subjected to wear test. The crown surface was digitized using coordinate measuring machine before and after the performed wear test. Mesh 3D models were reconstructed and average and maximum depth of lost material and volume loss was calculated (GOM Inspect 2016 software). Mean average depth value amounted 12 7 gm, maximum depth value was 42 gm, while mean volume loss was 0.0024 mm(3). The smallest measured values were 4 gm for depth value and 0.0003 mm(3) for volume loss. Coefficient of variation was very high for all tested parameters (>50%) as a result of data inconsistency. Within the limitations of applied methodology, the possibility of using coordinate measuring machine in measurement of dental material wear was confirmed.
PB  - Japanese Soc Dental Materials Devices, Tokyo
T2  - Dental Materials Journal
T1  - Measurement of dental crown wear-In vitro study
VL  - 39
IS  - 1
SP  - 126
EP  - 134
DO  - 10.4012/dmj.2018-280
ER  - 
@article{
author = "Vlatkovic Jakovljević, Ivana and Todorović, Aleksandar and Budak, Igor and Sokac, Mario and Miličić, Biljana and Špadijer-Gostović, Aleksandra",
year = "2020",
abstract = "The purpose of the study was to test new method for in vitro evaluation of dental material wear with 3D digitization procedure. Thirty dental crowns, made of polyetheretherketone and veneered with composite material, were subjected to wear test. The crown surface was digitized using coordinate measuring machine before and after the performed wear test. Mesh 3D models were reconstructed and average and maximum depth of lost material and volume loss was calculated (GOM Inspect 2016 software). Mean average depth value amounted 12 7 gm, maximum depth value was 42 gm, while mean volume loss was 0.0024 mm(3). The smallest measured values were 4 gm for depth value and 0.0003 mm(3) for volume loss. Coefficient of variation was very high for all tested parameters (>50%) as a result of data inconsistency. Within the limitations of applied methodology, the possibility of using coordinate measuring machine in measurement of dental material wear was confirmed.",
publisher = "Japanese Soc Dental Materials Devices, Tokyo",
journal = "Dental Materials Journal",
title = "Measurement of dental crown wear-In vitro study",
volume = "39",
number = "1",
pages = "126-134",
doi = "10.4012/dmj.2018-280"
}
Vlatkovic Jakovljević, I., Todorović, A., Budak, I., Sokac, M., Miličić, B.,& Špadijer-Gostović, A.. (2020). Measurement of dental crown wear-In vitro study. in Dental Materials Journal
Japanese Soc Dental Materials Devices, Tokyo., 39(1), 126-134.
https://doi.org/10.4012/dmj.2018-280
Vlatkovic Jakovljević I, Todorović A, Budak I, Sokac M, Miličić B, Špadijer-Gostović A. Measurement of dental crown wear-In vitro study. in Dental Materials Journal. 2020;39(1):126-134.
doi:10.4012/dmj.2018-280 .
Vlatkovic Jakovljević, Ivana, Todorović, Aleksandar, Budak, Igor, Sokac, Mario, Miličić, Biljana, Špadijer-Gostović, Aleksandra, "Measurement of dental crown wear-In vitro study" in Dental Materials Journal, 39, no. 1 (2020):126-134,
https://doi.org/10.4012/dmj.2018-280 . .
9
2
6

Cement selection for fixing implant restorations

Stamenković, Dejan; Todorović, Aleksandar

(Srpsko lekarsko društvo - Stomatološka sekcija, Beograd, 2019)

TY  - JOUR
AU  - Stamenković, Dejan
AU  - Todorović, Aleksandar
PY  - 2019
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2473
AB  - Introduction When intraocclusal space is long enough, and patient has high aesthetic demands, cementing implant restoration is the proper choice. The aim of this study was to assess retentive forces of different cements used for fixing restoration to implant abutment. Material and method the separation forces were measured between restorations and abutments that were screw retained to the implant replica. The restorations were casted from Co-Cr-Mo alloy. They were cemented to abutments with five different types of cements (composite resin, glass-ionomer, zinc-polycarboxylate, zinc-phosphate and temporary cement). Each cement represented one group and each group included seven samples. Results Composite resin, glass-ionomer and zinc-polycarboxylate cements showed similar values of retentive forces (256-275 N), while zinc-phosphate cements had slightly lower value (174 N). Temporary cement showed significantly lower value of retentive force (59N). All cements for permanent bonding showed almost the same separation nature. By slow loading, the stress develops, leading to slightly stretched cement and as a consequence, sudden break of cement. Temporary cements also develop stress when slowly loaded, which firstly leads to stretching of cement, and then slight detachment from the implant replica. Conclusion Temporary cement has the lowest retentive force and is suitable for temporary bonding. Composite resin, glass-ionomer, zinc-polycarboxylate and zinc-phosphate cements have high retentive force, and they can be used for permanent cementation of restoration to abutment. Due to the high values of separation force, and other positive characteristics, composite resin should be cement of choice for bonding restorations to implant abutments.
AB  - Uvod Kod dovoljno velikog međuviličnog prostora i kod estetski zahtevnih pacijenata fiksiranje zubne nadoknade na implantatima cementom je metoda izbora. Cilj rada je da se na osnovu merenja sile razdvajanja zubne nadoknade od nosača nadoknade, cementirane različitim cementima, utvrde vrednosti retencionih sila za različite vrste cemenata. Metode Merena je sila razdvajanja nadoknade od nosača nadoknade, koji je fiksiran zavrtnjem za repliku implantata. Zubne nadoknade izlivene su od Co-Cr legure. Nadoknade su cementirane za nosače nadoknada sa pet različitih cemenata. Svaka vrsta cementa predstavljala je posebnu grupu. Merenja svake grupe su obavljana na sedam uzoraka. Rezultati Kompozitni, glas-jonomerni i karboksilatni cementi su pokazali približno iste vrednosti retencione sile (256-275 N), dok su cink-fosfatni cementi imali nešto manju retencionu silu (174 N). Privremeni cementi su pokazali značajno nižu retencionu silu (59 N). Svi cementi za trajno vezivanje su pokazivali gotovo istovetnu prirodu razdvajanja. Pri postepenom opterećenju razvijaju se naponi u cementu koji dovode do neznatnog istezanja cementnog filma i naglog loma cementa. Pri postepenom opterećenju privremeni cementi razvijaju napone koji prvo dovode do istezanja cementnog filma, a zatim do laganog odvajanja od replike implantata. Zaključak Privremeni cementi imaju najmanju retencionu silu i pogodni su za privremena cementiranja. Kompozitni, glas-jonomerni, karboksilatni i cink-fosfatni cementi daju veliku retencionu silu koja može trajno fiksirati zubnu nadoknadu za nosač implantata. Zbog velike sile razdvajanja, ali i zbog poznatih dobrih osobina, kompozitnim cementima treba dati prednost u cementiranju zubnih nadoknada na implantatima.
PB  - Srpsko lekarsko društvo - Stomatološka sekcija, Beograd
T2  - Stomatološki glasnik Srbije
T1  - Cement selection for fixing implant restorations
T1  - Izbor cementa za fiksiranje nadoknada na implantatima
VL  - 66
IS  - 2
SP  - 79
EP  - 86
DO  - 10.2478/sdj-2019-0009
ER  - 
@article{
author = "Stamenković, Dejan and Todorović, Aleksandar",
year = "2019",
abstract = "Introduction When intraocclusal space is long enough, and patient has high aesthetic demands, cementing implant restoration is the proper choice. The aim of this study was to assess retentive forces of different cements used for fixing restoration to implant abutment. Material and method the separation forces were measured between restorations and abutments that were screw retained to the implant replica. The restorations were casted from Co-Cr-Mo alloy. They were cemented to abutments with five different types of cements (composite resin, glass-ionomer, zinc-polycarboxylate, zinc-phosphate and temporary cement). Each cement represented one group and each group included seven samples. Results Composite resin, glass-ionomer and zinc-polycarboxylate cements showed similar values of retentive forces (256-275 N), while zinc-phosphate cements had slightly lower value (174 N). Temporary cement showed significantly lower value of retentive force (59N). All cements for permanent bonding showed almost the same separation nature. By slow loading, the stress develops, leading to slightly stretched cement and as a consequence, sudden break of cement. Temporary cements also develop stress when slowly loaded, which firstly leads to stretching of cement, and then slight detachment from the implant replica. Conclusion Temporary cement has the lowest retentive force and is suitable for temporary bonding. Composite resin, glass-ionomer, zinc-polycarboxylate and zinc-phosphate cements have high retentive force, and they can be used for permanent cementation of restoration to abutment. Due to the high values of separation force, and other positive characteristics, composite resin should be cement of choice for bonding restorations to implant abutments., Uvod Kod dovoljno velikog međuviličnog prostora i kod estetski zahtevnih pacijenata fiksiranje zubne nadoknade na implantatima cementom je metoda izbora. Cilj rada je da se na osnovu merenja sile razdvajanja zubne nadoknade od nosača nadoknade, cementirane različitim cementima, utvrde vrednosti retencionih sila za različite vrste cemenata. Metode Merena je sila razdvajanja nadoknade od nosača nadoknade, koji je fiksiran zavrtnjem za repliku implantata. Zubne nadoknade izlivene su od Co-Cr legure. Nadoknade su cementirane za nosače nadoknada sa pet različitih cemenata. Svaka vrsta cementa predstavljala je posebnu grupu. Merenja svake grupe su obavljana na sedam uzoraka. Rezultati Kompozitni, glas-jonomerni i karboksilatni cementi su pokazali približno iste vrednosti retencione sile (256-275 N), dok su cink-fosfatni cementi imali nešto manju retencionu silu (174 N). Privremeni cementi su pokazali značajno nižu retencionu silu (59 N). Svi cementi za trajno vezivanje su pokazivali gotovo istovetnu prirodu razdvajanja. Pri postepenom opterećenju razvijaju se naponi u cementu koji dovode do neznatnog istezanja cementnog filma i naglog loma cementa. Pri postepenom opterećenju privremeni cementi razvijaju napone koji prvo dovode do istezanja cementnog filma, a zatim do laganog odvajanja od replike implantata. Zaključak Privremeni cementi imaju najmanju retencionu silu i pogodni su za privremena cementiranja. Kompozitni, glas-jonomerni, karboksilatni i cink-fosfatni cementi daju veliku retencionu silu koja može trajno fiksirati zubnu nadoknadu za nosač implantata. Zbog velike sile razdvajanja, ali i zbog poznatih dobrih osobina, kompozitnim cementima treba dati prednost u cementiranju zubnih nadoknada na implantatima.",
publisher = "Srpsko lekarsko društvo - Stomatološka sekcija, Beograd",
journal = "Stomatološki glasnik Srbije",
title = "Cement selection for fixing implant restorations, Izbor cementa za fiksiranje nadoknada na implantatima",
volume = "66",
number = "2",
pages = "79-86",
doi = "10.2478/sdj-2019-0009"
}
Stamenković, D.,& Todorović, A.. (2019). Cement selection for fixing implant restorations. in Stomatološki glasnik Srbije
Srpsko lekarsko društvo - Stomatološka sekcija, Beograd., 66(2), 79-86.
https://doi.org/10.2478/sdj-2019-0009
Stamenković D, Todorović A. Cement selection for fixing implant restorations. in Stomatološki glasnik Srbije. 2019;66(2):79-86.
doi:10.2478/sdj-2019-0009 .
Stamenković, Dejan, Todorović, Aleksandar, "Cement selection for fixing implant restorations" in Stomatološki glasnik Srbije, 66, no. 2 (2019):79-86,
https://doi.org/10.2478/sdj-2019-0009 . .

Analysis of accuracy and precision of optical 3D digitisation devices in dental computer-aided-design and computer-aided-manufacturing systems

Trifković, Branka; Budak, Igor; Vukelić, Đorđe; Puškar, Tatjana; Jevremović, Danimir; Todorović, Aleksandar; Todorović, Ana; Poštić, Srđan

(Maejo University, 2017)

TY  - JOUR
AU  - Trifković, Branka
AU  - Budak, Igor
AU  - Vukelić, Đorđe
AU  - Puškar, Tatjana
AU  - Jevremović, Danimir
AU  - Todorović, Aleksandar
AU  - Todorović, Ana
AU  - Poštić, Srđan
PY  - 2017
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2257
AB  - The implementation of intraoral and extraoral computer-aided-design and computer-aided-manufacturing (CAD/CAM) systems in prosthetic dentistry has simplified the procedure, shortened the period of design and manufacture and improved accuracy and aesthetic properties of dental restorations. Three-dimensional (3D) digitisation has become an adequate replacement for conventional dental impressions. The market offers a variety of diverse optical intraoral and extraoral CAD/CAM systems equipped with digitisation devices that are based on different working principles. The main goal of this research is to determine whether precision and accuracy differ among optical digitisation devices. The research includes five high-end devices: Cerec AC, Cerec InEos, Trios, KaVo Everest and Sinergia Scan. The evaluation methodology of the experiment is based on CAD inspection. The results, obtained from accuracy and precision measurements with tolerance levels of 0.01, 0.25 and 0.05 mm, indicate that there is a difference in accuracy and precision between optical digitisation devices based on different working principles.
PB  - Maejo University
T2  - Maejo International Journal of Science & Technology
T1  - Analysis of accuracy and precision of optical 3D digitisation devices in dental computer-aided-design and computer-aided-manufacturing systems
VL  - 11
IS  - 1
SP  - 45
EP  - 57
UR  - https://hdl.handle.net/21.15107/rcub_smile_2257
ER  - 
@article{
author = "Trifković, Branka and Budak, Igor and Vukelić, Đorđe and Puškar, Tatjana and Jevremović, Danimir and Todorović, Aleksandar and Todorović, Ana and Poštić, Srđan",
year = "2017",
abstract = "The implementation of intraoral and extraoral computer-aided-design and computer-aided-manufacturing (CAD/CAM) systems in prosthetic dentistry has simplified the procedure, shortened the period of design and manufacture and improved accuracy and aesthetic properties of dental restorations. Three-dimensional (3D) digitisation has become an adequate replacement for conventional dental impressions. The market offers a variety of diverse optical intraoral and extraoral CAD/CAM systems equipped with digitisation devices that are based on different working principles. The main goal of this research is to determine whether precision and accuracy differ among optical digitisation devices. The research includes five high-end devices: Cerec AC, Cerec InEos, Trios, KaVo Everest and Sinergia Scan. The evaluation methodology of the experiment is based on CAD inspection. The results, obtained from accuracy and precision measurements with tolerance levels of 0.01, 0.25 and 0.05 mm, indicate that there is a difference in accuracy and precision between optical digitisation devices based on different working principles.",
publisher = "Maejo University",
journal = "Maejo International Journal of Science & Technology",
title = "Analysis of accuracy and precision of optical 3D digitisation devices in dental computer-aided-design and computer-aided-manufacturing systems",
volume = "11",
number = "1",
pages = "45-57",
url = "https://hdl.handle.net/21.15107/rcub_smile_2257"
}
Trifković, B., Budak, I., Vukelić, Đ., Puškar, T., Jevremović, D., Todorović, A., Todorović, A.,& Poštić, S.. (2017). Analysis of accuracy and precision of optical 3D digitisation devices in dental computer-aided-design and computer-aided-manufacturing systems. in Maejo International Journal of Science & Technology
Maejo University., 11(1), 45-57.
https://hdl.handle.net/21.15107/rcub_smile_2257
Trifković B, Budak I, Vukelić Đ, Puškar T, Jevremović D, Todorović A, Todorović A, Poštić S. Analysis of accuracy and precision of optical 3D digitisation devices in dental computer-aided-design and computer-aided-manufacturing systems. in Maejo International Journal of Science & Technology. 2017;11(1):45-57.
https://hdl.handle.net/21.15107/rcub_smile_2257 .
Trifković, Branka, Budak, Igor, Vukelić, Đorđe, Puškar, Tatjana, Jevremović, Danimir, Todorović, Aleksandar, Todorović, Ana, Poštić, Srđan, "Analysis of accuracy and precision of optical 3D digitisation devices in dental computer-aided-design and computer-aided-manufacturing systems" in Maejo International Journal of Science & Technology, 11, no. 1 (2017):45-57,
https://hdl.handle.net/21.15107/rcub_smile_2257 .
2

Analysis of load distribution in tooth-implant supported fixed partial dentures by the use of resilient abutment

Glišić, Mirko; Stamenković, Dragoslav; Grbović, Aleksandar; Todorović, Aleksandar; Marković, Aleksa; Trifković, Branka

(Srpsko lekarsko društvo, Beograd, 2016)

TY  - JOUR
AU  - Glišić, Mirko
AU  - Stamenković, Dragoslav
AU  - Grbović, Aleksandar
AU  - Todorović, Aleksandar
AU  - Marković, Aleksa
AU  - Trifković, Branka
PY  - 2016
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2159
AB  - Introduction Differences between the tooth and implant response to load can lead to many biological and technical implications in the conditions of occlusal forces. Objective The objective of this study was to analyze load distribution in tooth/implant-supported fixed partial dentures with the use of resilient TSA (Titan Shock Absorber, BoneCare GmbH, Augsburg, Germany) abutment and conventional non-resilient abutment using finite element method. Methods This study presents two basic 3D models. For one model a standard non-resilient abutment is used, and on the implant of the second model a resilient TSA abutment is applied. The virtual model contains drawn contours of tooth, mucous membranes, implant, cortical bones and spongiosa, abutment and suprastructure. The experiment used 500 N of vertical force, applied in three different cases of axial load. Calculations of von Mises equivalent stresses of the tooth root and periodontium, implants and peri-implant tissue were made. Results For the model to which a non-resilient abutment is applied, maximum stress values in all three cases are observed in the cortical part of the bone (maximum stress value of 49.7 MPa). Measurements of stress and deformation in the bone tissue in the model with application of the resilient TSA abutment demonstrated similar distribution; however, these values are many times lower than in the model with non-resilient TSA abutment (maximum stress value of 28.9 MPa). Conclusion Application of the resilient TSA abutment results in more equal distribution of stress and deformations in the bone tissue under vertical forces. These values are many times lower than in the model with the non-resilient abutment.
AB  - Uvod Razlike u odgovoru zuba i implantata na opterećenje mogu imati za posledicu niz bioloških i tehničkih komplikacija u uslovima delovanja okluzalnih sila. Cilj rada Cilj ovog rada je da se analizira distribucija opterećenja kod mešovito nošenih mostova sa primenom rezilijentnog TSA abatmenta (Titan Shock Absorber, BoneCare GmbH Germany), kao i konvencionalnog nerezilijentnog abatmenta primenom metode konačnih elemenata (MKE). Metode rada U ovom radu napravljena su dva osnovna 3D modela. Na jednom implantatu i modelu korišćen je standardni nerezilijentni abatment, a na implantatu drugog modela korišćen je rezilijentni TSA abatment. Na virtuelnom modelu su modelirane konture zuba, PDL-a, sluzokože, implantata, kortikalne i spongiozne kosti, abatmenta i suprastrukture. U eksperimentu je korišćena vertikalna sila od 500 N, koja je primenjena u tri različita slučaja aksijalnog opterećenja. Metodom konačnih elemenata izračunavani su potom Fon Mizesovi ekvivalentni naponi u korenu zuba i parodoncijumu, implantatu i periimplantatnom tkivu. Rezultati Na modelu kod koga je primenjen nerezilijentni abatment, maksimalne vrednosti napona i deformacije u sva tri slučaja su registrovane u kortikalnom delu kosti oko zuba i implantata u zavisnosti od napadne tačke sile (maksimalan napon 49,7 MPa). Vrednosti napona i deformacija na modelu sa primenom rezilijentnog TSA abatmenta pokazale su sličnu raspodelu u kosti, međutim ove vrednosti su višestruko manje nego kod modela sa nerezilijentnim abatmentom (maksimalan napon 28,9 MPa). Zaključak Primena rezilijentnog TSA abatmenta dovodi do ravnomernije raspodele napona i deformacije u koštanom tkivu oko zuba i implantata pod dejstvom vertikalnih sila. Izmerene vrednosti su višestruko manje nego na modelu sa nerezilijentnim abatmentom.
PB  - Srpsko lekarsko društvo, Beograd
T2  - Srpski arhiv za celokupno lekarstvo
T1  - Analysis of load distribution in tooth-implant supported fixed partial dentures by the use of resilient abutment
T1  - Analiza distribucije opterećenja kod mešovito nošenih mostova primenom rezilijentnih abatmenata
VL  - 144
IS  - 3-4
SP  - 188
EP  - 195
DO  - 10.2298/sarh1604188G
ER  - 
@article{
author = "Glišić, Mirko and Stamenković, Dragoslav and Grbović, Aleksandar and Todorović, Aleksandar and Marković, Aleksa and Trifković, Branka",
year = "2016",
abstract = "Introduction Differences between the tooth and implant response to load can lead to many biological and technical implications in the conditions of occlusal forces. Objective The objective of this study was to analyze load distribution in tooth/implant-supported fixed partial dentures with the use of resilient TSA (Titan Shock Absorber, BoneCare GmbH, Augsburg, Germany) abutment and conventional non-resilient abutment using finite element method. Methods This study presents two basic 3D models. For one model a standard non-resilient abutment is used, and on the implant of the second model a resilient TSA abutment is applied. The virtual model contains drawn contours of tooth, mucous membranes, implant, cortical bones and spongiosa, abutment and suprastructure. The experiment used 500 N of vertical force, applied in three different cases of axial load. Calculations of von Mises equivalent stresses of the tooth root and periodontium, implants and peri-implant tissue were made. Results For the model to which a non-resilient abutment is applied, maximum stress values in all three cases are observed in the cortical part of the bone (maximum stress value of 49.7 MPa). Measurements of stress and deformation in the bone tissue in the model with application of the resilient TSA abutment demonstrated similar distribution; however, these values are many times lower than in the model with non-resilient TSA abutment (maximum stress value of 28.9 MPa). Conclusion Application of the resilient TSA abutment results in more equal distribution of stress and deformations in the bone tissue under vertical forces. These values are many times lower than in the model with the non-resilient abutment., Uvod Razlike u odgovoru zuba i implantata na opterećenje mogu imati za posledicu niz bioloških i tehničkih komplikacija u uslovima delovanja okluzalnih sila. Cilj rada Cilj ovog rada je da se analizira distribucija opterećenja kod mešovito nošenih mostova sa primenom rezilijentnog TSA abatmenta (Titan Shock Absorber, BoneCare GmbH Germany), kao i konvencionalnog nerezilijentnog abatmenta primenom metode konačnih elemenata (MKE). Metode rada U ovom radu napravljena su dva osnovna 3D modela. Na jednom implantatu i modelu korišćen je standardni nerezilijentni abatment, a na implantatu drugog modela korišćen je rezilijentni TSA abatment. Na virtuelnom modelu su modelirane konture zuba, PDL-a, sluzokože, implantata, kortikalne i spongiozne kosti, abatmenta i suprastrukture. U eksperimentu je korišćena vertikalna sila od 500 N, koja je primenjena u tri različita slučaja aksijalnog opterećenja. Metodom konačnih elemenata izračunavani su potom Fon Mizesovi ekvivalentni naponi u korenu zuba i parodoncijumu, implantatu i periimplantatnom tkivu. Rezultati Na modelu kod koga je primenjen nerezilijentni abatment, maksimalne vrednosti napona i deformacije u sva tri slučaja su registrovane u kortikalnom delu kosti oko zuba i implantata u zavisnosti od napadne tačke sile (maksimalan napon 49,7 MPa). Vrednosti napona i deformacija na modelu sa primenom rezilijentnog TSA abatmenta pokazale su sličnu raspodelu u kosti, međutim ove vrednosti su višestruko manje nego kod modela sa nerezilijentnim abatmentom (maksimalan napon 28,9 MPa). Zaključak Primena rezilijentnog TSA abatmenta dovodi do ravnomernije raspodele napona i deformacije u koštanom tkivu oko zuba i implantata pod dejstvom vertikalnih sila. Izmerene vrednosti su višestruko manje nego na modelu sa nerezilijentnim abatmentom.",
publisher = "Srpsko lekarsko društvo, Beograd",
journal = "Srpski arhiv za celokupno lekarstvo",
title = "Analysis of load distribution in tooth-implant supported fixed partial dentures by the use of resilient abutment, Analiza distribucije opterećenja kod mešovito nošenih mostova primenom rezilijentnih abatmenata",
volume = "144",
number = "3-4",
pages = "188-195",
doi = "10.2298/sarh1604188G"
}
Glišić, M., Stamenković, D., Grbović, A., Todorović, A., Marković, A.,& Trifković, B.. (2016). Analysis of load distribution in tooth-implant supported fixed partial dentures by the use of resilient abutment. in Srpski arhiv za celokupno lekarstvo
Srpsko lekarsko društvo, Beograd., 144(3-4), 188-195.
https://doi.org/10.2298/sarh1604188G
Glišić M, Stamenković D, Grbović A, Todorović A, Marković A, Trifković B. Analysis of load distribution in tooth-implant supported fixed partial dentures by the use of resilient abutment. in Srpski arhiv za celokupno lekarstvo. 2016;144(3-4):188-195.
doi:10.2298/sarh1604188G .
Glišić, Mirko, Stamenković, Dragoslav, Grbović, Aleksandar, Todorović, Aleksandar, Marković, Aleksa, Trifković, Branka, "Analysis of load distribution in tooth-implant supported fixed partial dentures by the use of resilient abutment" in Srpski arhiv za celokupno lekarstvo, 144, no. 3-4 (2016):188-195,
https://doi.org/10.2298/sarh1604188G . .
4
4
4

Effect of surgical drill guide and irrigans temperature on thermal bone changes during drilling implant sites: Thermographic analysis on bovine ribs

Marković, Aleksa; Lazić, Zoran; Mišić, Tijana; Šćepanović, Miodrag; Todorović, Aleksandar; Thakare, Kaustubh; Janjić, Bojan; Vlahović, Zoran; Glišić, Mirko

(Vojnomedicinska akademija - Institut za naučne informacije, Beograd, 2016)

TY  - JOUR
AU  - Marković, Aleksa
AU  - Lazić, Zoran
AU  - Mišić, Tijana
AU  - Šćepanović, Miodrag
AU  - Todorović, Aleksandar
AU  - Thakare, Kaustubh
AU  - Janjić, Bojan
AU  - Vlahović, Zoran
AU  - Glišić, Mirko
PY  - 2016
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2081
AB  - Background/Aim. During drilling implant sites, mechanical energy is converted into thermal one resulting in transient rise in temperature of surrounding bone. The temperature of 47°C exeeding one minute impairs osseointegration, compromises mechanical properties of the local bone and could cause early implant failure. This in vitro study aimed to assess the effect of surgical drill guide and temperature of irrigans on thermal changes of the local bone during drilling implant sites, and to test the influence of irrigans temperature on the temperature of surgical drill guide. Methods. A total of 48 specimens obtained from bovine ribs were randomly allocated to four experimental conditions according to the 2 x 2 factorial design: drill guide (with or without) and saline (at 25°C or 5°C). Real-time infrared thermography was used as a method for temperature measurement. The primary outcome was bone temperature change during drilling implant sites measured at 3 osteotomy depths, whereas the second one was change in the temperature of the drill guide. Data were analyzed by Brunner and Langer nonparametric analysis and Wilcoxon test. Results. The effect of drill guide on the changes of bone temperature was significant at the entrance of osteotomy, whereas the effect of saline temperature was significant at all osteotomy levels (p  lt  0.001). No significant interaction was found (p > 0.05). Guided surgery and irrigation with saline at 25°C were associated with the highest bone temperature increase. Increase in drill guide temperature was significantly higher when saline at 25°C was used (p  lt  0.001). Conclusion. Guided implant site preparation generates higher temperature of the local bone than conventional drilling, not exceeding the threshold for thermal bone necrosis. Although saline at room temperature provides sufficient heat control during drilling, cooled saline is more effective regardless the use of surgical drill guide.
AB  - Uvod/Cilj. Tokom preparacije ležišta za implantat mehanička energija pretvara se u toplotnu, što dovodi do prolaznog povišenja temperature okolne kosti. Temperatura od 47°C tokom više od jednog minuta narušava oseointegraciju, mehaničke osobine lokalne kosti i može dovesti do ranog neuspeha implantata. Cilj ove in vitro studije bio je da se ispita uticaj hirurškog stenta i temperature irigansa na termičke promene u kosti tokom preparacije ležišta za implantat, kao i uticaj temperature irigansa na temperaturu hirurškog stenta. Metode. Ukupno 48 uzoraka dobijenih od goveđih rebara bilo je podeljeno metodom slučajnog izbora u četiri grupe prema 2 x 2 faktorskom dizajnu: prisustvo hirurškog stenta (da/ne) i temperatura fiziološkog rastvora (25°C/5°C). Temperatura je merena infracrvenom termografijom u realnom vremenu. Primarni ishod bio je promena temperature kosti tokom preparacije ležišta implantata merena na tri dubine ležišta, a sekundarni ishod promena temperature hirurškog stenta. Podaci su analizirani Bruner-Langer neparametrijskom analizom i Vilkoksonovim testom. Rezultati. Uticaj hirurškog stenta na promenutemperature kosti bio je značajan na ulazu u ležište za implantat, dok je uticaj temperature irigansa bio značajan na svim dubinama ležišta (p  lt  0,001). Međusobni uticaj ispitivanih faktora nije bio značajan (p > 0,05). Upotreba hirurškog stenta i ispiranje fiziološkim rastvorom temperature 25°C bili su praćeni najvišim porastom temperature kosti. Porast temperature hirurškog stenta bio je značajno viši kada je korišćeno ispiranje na temperaturi od 25°C (p  lt  0,001). Zaključak. Tokom kontrolisane preparacije ležišta za implantat došlo je do većeg zagrevanja kosti u poređenju sa standardnom preparacijom, ne premašujući temperaturu kritičnu za termičku nekrozu kosti. Iako ispiranje na sobnoj temperaturi obezbeđuje dovoljno hlađenja kosti tokom preparacije ležišta za implantat, ohlađeni rastvor za ispiranje je efikasniji bez obzira na primenu hirurškog stenta.
PB  - Vojnomedicinska akademija - Institut za naučne informacije, Beograd
T2  - Vojnosanitetski pregled
T1  - Effect of surgical drill guide and irrigans temperature on thermal bone changes during drilling implant sites: Thermographic analysis on bovine ribs
T1  - Uticaj hirurškog stenta i temperature irigansa na termičke promene u kosti tokom preparacije ležišta implantata - termografska analiza na goveđim rebrima
VL  - 73
IS  - 8
SP  - 744
EP  - 750
DO  - 10.2298/VSP141208041M
ER  - 
@article{
author = "Marković, Aleksa and Lazić, Zoran and Mišić, Tijana and Šćepanović, Miodrag and Todorović, Aleksandar and Thakare, Kaustubh and Janjić, Bojan and Vlahović, Zoran and Glišić, Mirko",
year = "2016",
abstract = "Background/Aim. During drilling implant sites, mechanical energy is converted into thermal one resulting in transient rise in temperature of surrounding bone. The temperature of 47°C exeeding one minute impairs osseointegration, compromises mechanical properties of the local bone and could cause early implant failure. This in vitro study aimed to assess the effect of surgical drill guide and temperature of irrigans on thermal changes of the local bone during drilling implant sites, and to test the influence of irrigans temperature on the temperature of surgical drill guide. Methods. A total of 48 specimens obtained from bovine ribs were randomly allocated to four experimental conditions according to the 2 x 2 factorial design: drill guide (with or without) and saline (at 25°C or 5°C). Real-time infrared thermography was used as a method for temperature measurement. The primary outcome was bone temperature change during drilling implant sites measured at 3 osteotomy depths, whereas the second one was change in the temperature of the drill guide. Data were analyzed by Brunner and Langer nonparametric analysis and Wilcoxon test. Results. The effect of drill guide on the changes of bone temperature was significant at the entrance of osteotomy, whereas the effect of saline temperature was significant at all osteotomy levels (p  lt  0.001). No significant interaction was found (p > 0.05). Guided surgery and irrigation with saline at 25°C were associated with the highest bone temperature increase. Increase in drill guide temperature was significantly higher when saline at 25°C was used (p  lt  0.001). Conclusion. Guided implant site preparation generates higher temperature of the local bone than conventional drilling, not exceeding the threshold for thermal bone necrosis. Although saline at room temperature provides sufficient heat control during drilling, cooled saline is more effective regardless the use of surgical drill guide., Uvod/Cilj. Tokom preparacije ležišta za implantat mehanička energija pretvara se u toplotnu, što dovodi do prolaznog povišenja temperature okolne kosti. Temperatura od 47°C tokom više od jednog minuta narušava oseointegraciju, mehaničke osobine lokalne kosti i može dovesti do ranog neuspeha implantata. Cilj ove in vitro studije bio je da se ispita uticaj hirurškog stenta i temperature irigansa na termičke promene u kosti tokom preparacije ležišta za implantat, kao i uticaj temperature irigansa na temperaturu hirurškog stenta. Metode. Ukupno 48 uzoraka dobijenih od goveđih rebara bilo je podeljeno metodom slučajnog izbora u četiri grupe prema 2 x 2 faktorskom dizajnu: prisustvo hirurškog stenta (da/ne) i temperatura fiziološkog rastvora (25°C/5°C). Temperatura je merena infracrvenom termografijom u realnom vremenu. Primarni ishod bio je promena temperature kosti tokom preparacije ležišta implantata merena na tri dubine ležišta, a sekundarni ishod promena temperature hirurškog stenta. Podaci su analizirani Bruner-Langer neparametrijskom analizom i Vilkoksonovim testom. Rezultati. Uticaj hirurškog stenta na promenutemperature kosti bio je značajan na ulazu u ležište za implantat, dok je uticaj temperature irigansa bio značajan na svim dubinama ležišta (p  lt  0,001). Međusobni uticaj ispitivanih faktora nije bio značajan (p > 0,05). Upotreba hirurškog stenta i ispiranje fiziološkim rastvorom temperature 25°C bili su praćeni najvišim porastom temperature kosti. Porast temperature hirurškog stenta bio je značajno viši kada je korišćeno ispiranje na temperaturi od 25°C (p  lt  0,001). Zaključak. Tokom kontrolisane preparacije ležišta za implantat došlo je do većeg zagrevanja kosti u poređenju sa standardnom preparacijom, ne premašujući temperaturu kritičnu za termičku nekrozu kosti. Iako ispiranje na sobnoj temperaturi obezbeđuje dovoljno hlađenja kosti tokom preparacije ležišta za implantat, ohlađeni rastvor za ispiranje je efikasniji bez obzira na primenu hirurškog stenta.",
publisher = "Vojnomedicinska akademija - Institut za naučne informacije, Beograd",
journal = "Vojnosanitetski pregled",
title = "Effect of surgical drill guide and irrigans temperature on thermal bone changes during drilling implant sites: Thermographic analysis on bovine ribs, Uticaj hirurškog stenta i temperature irigansa na termičke promene u kosti tokom preparacije ležišta implantata - termografska analiza na goveđim rebrima",
volume = "73",
number = "8",
pages = "744-750",
doi = "10.2298/VSP141208041M"
}
Marković, A., Lazić, Z., Mišić, T., Šćepanović, M., Todorović, A., Thakare, K., Janjić, B., Vlahović, Z.,& Glišić, M.. (2016). Effect of surgical drill guide and irrigans temperature on thermal bone changes during drilling implant sites: Thermographic analysis on bovine ribs. in Vojnosanitetski pregled
Vojnomedicinska akademija - Institut za naučne informacije, Beograd., 73(8), 744-750.
https://doi.org/10.2298/VSP141208041M
Marković A, Lazić Z, Mišić T, Šćepanović M, Todorović A, Thakare K, Janjić B, Vlahović Z, Glišić M. Effect of surgical drill guide and irrigans temperature on thermal bone changes during drilling implant sites: Thermographic analysis on bovine ribs. in Vojnosanitetski pregled. 2016;73(8):744-750.
doi:10.2298/VSP141208041M .
Marković, Aleksa, Lazić, Zoran, Mišić, Tijana, Šćepanović, Miodrag, Todorović, Aleksandar, Thakare, Kaustubh, Janjić, Bojan, Vlahović, Zoran, Glišić, Mirko, "Effect of surgical drill guide and irrigans temperature on thermal bone changes during drilling implant sites: Thermographic analysis on bovine ribs" in Vojnosanitetski pregled, 73, no. 8 (2016):744-750,
https://doi.org/10.2298/VSP141208041M . .
21
8
21

Hydroxyapatite coatings on cp-titanium grade-2 surfaces prepared with plasma spraying

Rudolf, Rebeka; Stamenković, Dragoslav; Aleksić, Zoran; Jenko, Monika; Đorđević, Igor; Todorović, Aleksandar; Jokanović, Vukoman; Raić, Karlo T.

(Inst Za Kovinske Materiale I In Tehnologie, Ljubjana, 2015)

TY  - JOUR
AU  - Rudolf, Rebeka
AU  - Stamenković, Dragoslav
AU  - Aleksić, Zoran
AU  - Jenko, Monika
AU  - Đorđević, Igor
AU  - Todorović, Aleksandar
AU  - Jokanović, Vukoman
AU  - Raić, Karlo T.
PY  - 2015
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1982
AB  - Thin hydroxyapatite coatings were produced on Cp-Titanium Grade-2 samples, with new high-voltage pulse-power equipment PJ-100 (Plasma Jet, Serbia) in order to get a more stable implant structure appropriate for further clinical applications. A comparative analysis of differently prepared surfaces of the Cp-Titanium Grade-2 samples was done before the hydroxyapatite was applied. Microstructural observation of the modified hydroxyapatite/implant surface was done using scanning-electron-microscopy imaging and Auger electron spectroscopy, with the aim of detecting the morphology and the elements contained in the new surfaces of the samples. The results confirmed that the surface of Cp-Titanium Grade-2 modified with hydroxyapatite is very similar to the bone structure.
PB  - Inst Za Kovinske Materiale I In Tehnologie, Ljubjana
T2  - Materiali in Tehnologije
T1  - Hydroxyapatite coatings on cp-titanium grade-2 surfaces prepared with plasma spraying
VL  - 49
IS  - 1
SP  - 81
EP  - 86
UR  - https://hdl.handle.net/21.15107/rcub_vinar_427
ER  - 
@article{
author = "Rudolf, Rebeka and Stamenković, Dragoslav and Aleksić, Zoran and Jenko, Monika and Đorđević, Igor and Todorović, Aleksandar and Jokanović, Vukoman and Raić, Karlo T.",
year = "2015",
abstract = "Thin hydroxyapatite coatings were produced on Cp-Titanium Grade-2 samples, with new high-voltage pulse-power equipment PJ-100 (Plasma Jet, Serbia) in order to get a more stable implant structure appropriate for further clinical applications. A comparative analysis of differently prepared surfaces of the Cp-Titanium Grade-2 samples was done before the hydroxyapatite was applied. Microstructural observation of the modified hydroxyapatite/implant surface was done using scanning-electron-microscopy imaging and Auger electron spectroscopy, with the aim of detecting the morphology and the elements contained in the new surfaces of the samples. The results confirmed that the surface of Cp-Titanium Grade-2 modified with hydroxyapatite is very similar to the bone structure.",
publisher = "Inst Za Kovinske Materiale I In Tehnologie, Ljubjana",
journal = "Materiali in Tehnologije",
title = "Hydroxyapatite coatings on cp-titanium grade-2 surfaces prepared with plasma spraying",
volume = "49",
number = "1",
pages = "81-86",
url = "https://hdl.handle.net/21.15107/rcub_vinar_427"
}
Rudolf, R., Stamenković, D., Aleksić, Z., Jenko, M., Đorđević, I., Todorović, A., Jokanović, V.,& Raić, K. T.. (2015). Hydroxyapatite coatings on cp-titanium grade-2 surfaces prepared with plasma spraying. in Materiali in Tehnologije
Inst Za Kovinske Materiale I In Tehnologie, Ljubjana., 49(1), 81-86.
https://hdl.handle.net/21.15107/rcub_vinar_427
Rudolf R, Stamenković D, Aleksić Z, Jenko M, Đorđević I, Todorović A, Jokanović V, Raić KT. Hydroxyapatite coatings on cp-titanium grade-2 surfaces prepared with plasma spraying. in Materiali in Tehnologije. 2015;49(1):81-86.
https://hdl.handle.net/21.15107/rcub_vinar_427 .
Rudolf, Rebeka, Stamenković, Dragoslav, Aleksić, Zoran, Jenko, Monika, Đorđević, Igor, Todorović, Aleksandar, Jokanović, Vukoman, Raić, Karlo T., "Hydroxyapatite coatings on cp-titanium grade-2 surfaces prepared with plasma spraying" in Materiali in Tehnologije, 49, no. 1 (2015):81-86,
https://hdl.handle.net/21.15107/rcub_vinar_427 .
2

Immediately loaded mini dental implants as overdenture retainers: 1-Year cohort study of implant stability and peri-implant marginal bone level

Šćepanović, Miodrag; Todorović, Aleksandar; Marković, Aleksa; Patrnogić, Vesna; Miličić, Biljana; Moufti, Adel M.; Mišić, Tijana

(Elsevier Gmbh, Urban & Fischer Verlag, Jena, 2015)

TY  - JOUR
AU  - Šćepanović, Miodrag
AU  - Todorović, Aleksandar
AU  - Marković, Aleksa
AU  - Patrnogić, Vesna
AU  - Miličić, Biljana
AU  - Moufti, Adel M.
AU  - Mišić, Tijana
PY  - 2015
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2048
AB  - Aim: This 1-year cohort study investigated stability and pen-implant marginal bone level of immediately loaded mini dental implants used to retain overdentures. Materials and methods: Each of 30 edentulous patients received 4 mini dental implants (1.8 mm x 13 mm) in the interforaminal mandibular region. The implants were immediately loaded with pre-made overdentures. Outcome measures included implant stability and bone resorption. Implant stability was measured using the Periotest Classic (R) device immediately after placement and on the 3rd and 6th weeks and the 4th, 6th and 12th months postoperatively. The pen-implant marginal bone level (PIBL) was evaluated at the implant's mesial and distal sides from the polished platform to the marginal crest. Radiographs were taken using a tailored film holder to reproducibly position the X-ray tube at the 6th week, 4th and 12th months postoperatively. Results: The primary stability (Periotest value, PTV) measured -0.27 +/- 3.41 on a scale of -8 to + 50 (lower PTV reflects higher stability). The secondary stability decreased significantly until week 6 (mean PTV = 7.61 +/- 7.05) then increased significantly reaching (PTV = 6.17 +/- 6.15) at 12 months. The mean PIBL measured 0.40 mm after 1 year of functional loading, with no statistically significant differences at the various follow-ups (p = 0.218). Conclusions: Mini dental implants placed into the interforaminal region could achieve a favorable primary stability for immediate loading. The follow-up Periotest values fluctuated, apparently reflecting the dynamics of bone remodeling, with the implants remaining clinically stable (98.3%) after 1 year of function. The 1-year bone resorption around immediately loaded MDIs is within the clinically acceptable range for standard implants.
PB  - Elsevier Gmbh, Urban & Fischer Verlag, Jena
T2  - Annals of Anatomy - Anatomischer Anzeiger
T1  - Immediately loaded mini dental implants as overdenture retainers: 1-Year cohort study of implant stability and peri-implant marginal bone level
VL  - 199
SP  - 85
EP  - 91
DO  - 10.1016/j.aanat.2013.12.005
ER  - 
@article{
author = "Šćepanović, Miodrag and Todorović, Aleksandar and Marković, Aleksa and Patrnogić, Vesna and Miličić, Biljana and Moufti, Adel M. and Mišić, Tijana",
year = "2015",
abstract = "Aim: This 1-year cohort study investigated stability and pen-implant marginal bone level of immediately loaded mini dental implants used to retain overdentures. Materials and methods: Each of 30 edentulous patients received 4 mini dental implants (1.8 mm x 13 mm) in the interforaminal mandibular region. The implants were immediately loaded with pre-made overdentures. Outcome measures included implant stability and bone resorption. Implant stability was measured using the Periotest Classic (R) device immediately after placement and on the 3rd and 6th weeks and the 4th, 6th and 12th months postoperatively. The pen-implant marginal bone level (PIBL) was evaluated at the implant's mesial and distal sides from the polished platform to the marginal crest. Radiographs were taken using a tailored film holder to reproducibly position the X-ray tube at the 6th week, 4th and 12th months postoperatively. Results: The primary stability (Periotest value, PTV) measured -0.27 +/- 3.41 on a scale of -8 to + 50 (lower PTV reflects higher stability). The secondary stability decreased significantly until week 6 (mean PTV = 7.61 +/- 7.05) then increased significantly reaching (PTV = 6.17 +/- 6.15) at 12 months. The mean PIBL measured 0.40 mm after 1 year of functional loading, with no statistically significant differences at the various follow-ups (p = 0.218). Conclusions: Mini dental implants placed into the interforaminal region could achieve a favorable primary stability for immediate loading. The follow-up Periotest values fluctuated, apparently reflecting the dynamics of bone remodeling, with the implants remaining clinically stable (98.3%) after 1 year of function. The 1-year bone resorption around immediately loaded MDIs is within the clinically acceptable range for standard implants.",
publisher = "Elsevier Gmbh, Urban & Fischer Verlag, Jena",
journal = "Annals of Anatomy - Anatomischer Anzeiger",
title = "Immediately loaded mini dental implants as overdenture retainers: 1-Year cohort study of implant stability and peri-implant marginal bone level",
volume = "199",
pages = "85-91",
doi = "10.1016/j.aanat.2013.12.005"
}
Šćepanović, M., Todorović, A., Marković, A., Patrnogić, V., Miličić, B., Moufti, A. M.,& Mišić, T.. (2015). Immediately loaded mini dental implants as overdenture retainers: 1-Year cohort study of implant stability and peri-implant marginal bone level. in Annals of Anatomy - Anatomischer Anzeiger
Elsevier Gmbh, Urban & Fischer Verlag, Jena., 199, 85-91.
https://doi.org/10.1016/j.aanat.2013.12.005
Šćepanović M, Todorović A, Marković A, Patrnogić V, Miličić B, Moufti AM, Mišić T. Immediately loaded mini dental implants as overdenture retainers: 1-Year cohort study of implant stability and peri-implant marginal bone level. in Annals of Anatomy - Anatomischer Anzeiger. 2015;199:85-91.
doi:10.1016/j.aanat.2013.12.005 .
Šćepanović, Miodrag, Todorović, Aleksandar, Marković, Aleksa, Patrnogić, Vesna, Miličić, Biljana, Moufti, Adel M., Mišić, Tijana, "Immediately loaded mini dental implants as overdenture retainers: 1-Year cohort study of implant stability and peri-implant marginal bone level" in Annals of Anatomy - Anatomischer Anzeiger, 199 (2015):85-91,
https://doi.org/10.1016/j.aanat.2013.12.005 . .
22
18
26

Comparative analysis on measuring performances of dental intraoral and extraoral optical 3D digitization systems

Trifković, Branka; Budak, Igor; Todorović, Aleksandar; Vukelić, Đorđe; Lazić, Vojkan; Puškar, Tatjana

(Elsevier Sci Ltd, Oxford, 2014)

TY  - JOUR
AU  - Trifković, Branka
AU  - Budak, Igor
AU  - Todorović, Aleksandar
AU  - Vukelić, Đorđe
AU  - Lazić, Vojkan
AU  - Puškar, Tatjana
PY  - 2014
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1931
AB  - Implementation of the methods of 3D digitization in dental practice is a modern and sophisticated alternative to the method of conventional impressions. Among many different methods of 3D digitization applied in dentistry, optical methods can be considered as today mostly applied, especially in the field of prosthodontics. The developments of this kind of systems have converged in two main directions - extraoral and intraoral systems. The main quality parameters for evaluating measuring performances of 3D digitization methods and systems include accuracy and precision. By introducing LED blue light in intra-and extraoral cameras, the Cerec system has significantly improved the quality of 3D digitization results. As the technical features of cameras in both types of systems are identical and the difference of the digitization methods is connected only to operating environments, the main goal of the research was to analyze whether different digitization conditions significantly influence the systems' measuring performances. Analyzes were focused on investigating accuracy and precision of two mentioned specialized dental optical systems on the basis of CAD inspection, with special attention on evaluating statistically significant differences within the obtained results. Statistically significant difference was not found in systems' precision, while the extra oral system was found as of significantly higher accuracy.
PB  - Elsevier Sci Ltd, Oxford
T2  - Measurement
T1  - Comparative analysis on measuring performances of dental intraoral and extraoral optical 3D digitization systems
VL  - 47
SP  - 45
EP  - 53
DO  - 10.1016/j.measurement.2013.08.051
ER  - 
@article{
author = "Trifković, Branka and Budak, Igor and Todorović, Aleksandar and Vukelić, Đorđe and Lazić, Vojkan and Puškar, Tatjana",
year = "2014",
abstract = "Implementation of the methods of 3D digitization in dental practice is a modern and sophisticated alternative to the method of conventional impressions. Among many different methods of 3D digitization applied in dentistry, optical methods can be considered as today mostly applied, especially in the field of prosthodontics. The developments of this kind of systems have converged in two main directions - extraoral and intraoral systems. The main quality parameters for evaluating measuring performances of 3D digitization methods and systems include accuracy and precision. By introducing LED blue light in intra-and extraoral cameras, the Cerec system has significantly improved the quality of 3D digitization results. As the technical features of cameras in both types of systems are identical and the difference of the digitization methods is connected only to operating environments, the main goal of the research was to analyze whether different digitization conditions significantly influence the systems' measuring performances. Analyzes were focused on investigating accuracy and precision of two mentioned specialized dental optical systems on the basis of CAD inspection, with special attention on evaluating statistically significant differences within the obtained results. Statistically significant difference was not found in systems' precision, while the extra oral system was found as of significantly higher accuracy.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Measurement",
title = "Comparative analysis on measuring performances of dental intraoral and extraoral optical 3D digitization systems",
volume = "47",
pages = "45-53",
doi = "10.1016/j.measurement.2013.08.051"
}
Trifković, B., Budak, I., Todorović, A., Vukelić, Đ., Lazić, V.,& Puškar, T.. (2014). Comparative analysis on measuring performances of dental intraoral and extraoral optical 3D digitization systems. in Measurement
Elsevier Sci Ltd, Oxford., 47, 45-53.
https://doi.org/10.1016/j.measurement.2013.08.051
Trifković B, Budak I, Todorović A, Vukelić Đ, Lazić V, Puškar T. Comparative analysis on measuring performances of dental intraoral and extraoral optical 3D digitization systems. in Measurement. 2014;47:45-53.
doi:10.1016/j.measurement.2013.08.051 .
Trifković, Branka, Budak, Igor, Todorović, Aleksandar, Vukelić, Đorđe, Lazić, Vojkan, Puškar, Tatjana, "Comparative analysis on measuring performances of dental intraoral and extraoral optical 3D digitization systems" in Measurement, 47 (2014):45-53,
https://doi.org/10.1016/j.measurement.2013.08.051 . .
34
25
37

Comparative analysis of 3d digitization systems in the field of dental prosthetics

Budak, Igor; Trifković, Branka; Puškar, Tatjana; Vukelić, Đorđe; Vucaj-Cirilović, Viktorija; Hodolić, Janko; Todorović, Aleksandar

(Faculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering in Osijek, 2013)

TY  - JOUR
AU  - Budak, Igor
AU  - Trifković, Branka
AU  - Puškar, Tatjana
AU  - Vukelić, Đorđe
AU  - Vucaj-Cirilović, Viktorija
AU  - Hodolić, Janko
AU  - Todorović, Aleksandar
PY  - 2013
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1845
AB  - Amongst the modern engineering technologies which have found broad application in the field of dentistry, one of the most widely used is the 3D digitization. This paper deals with the application of 3D digitization systems in the field of dental prosthetics, and attempt to contribute in this field through comparative analysis of this kind of systems. Special attention is focused on extra oral 3D digitization systems and among them on non specialized dental 3D digitization systems. Beside the general overview and analysis of nine different systems, this paper presents experimental results of comparative accuracy analysis of two high-end 3D digitization systems - Atos II Triple Scan and Zeiss Metrotom 1500. Investigation was based on CAD inspection technique and included 3D and 2D cross sectional analysis. Results related to 3D analysis show that the majority of deviations are in positive direction, concentrated around 0,025 mm. Results of 2D analysis implicate the conclusion that the accuracy of the analysed systems is dependent on surface shape as well as on the model position during the process of 3D digitization.
PB  - Faculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering in Osijek
T2  - Tehnički vjesnik
T1  - Comparative analysis of 3d digitization systems in the field of dental prosthetics
VL  - 20
IS  - 2
SP  - 291
EP  - 296
UR  - https://hdl.handle.net/21.15107/rcub_smile_1845
ER  - 
@article{
author = "Budak, Igor and Trifković, Branka and Puškar, Tatjana and Vukelić, Đorđe and Vucaj-Cirilović, Viktorija and Hodolić, Janko and Todorović, Aleksandar",
year = "2013",
abstract = "Amongst the modern engineering technologies which have found broad application in the field of dentistry, one of the most widely used is the 3D digitization. This paper deals with the application of 3D digitization systems in the field of dental prosthetics, and attempt to contribute in this field through comparative analysis of this kind of systems. Special attention is focused on extra oral 3D digitization systems and among them on non specialized dental 3D digitization systems. Beside the general overview and analysis of nine different systems, this paper presents experimental results of comparative accuracy analysis of two high-end 3D digitization systems - Atos II Triple Scan and Zeiss Metrotom 1500. Investigation was based on CAD inspection technique and included 3D and 2D cross sectional analysis. Results related to 3D analysis show that the majority of deviations are in positive direction, concentrated around 0,025 mm. Results of 2D analysis implicate the conclusion that the accuracy of the analysed systems is dependent on surface shape as well as on the model position during the process of 3D digitization.",
publisher = "Faculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering in Osijek",
journal = "Tehnički vjesnik",
title = "Comparative analysis of 3d digitization systems in the field of dental prosthetics",
volume = "20",
number = "2",
pages = "291-296",
url = "https://hdl.handle.net/21.15107/rcub_smile_1845"
}
Budak, I., Trifković, B., Puškar, T., Vukelić, Đ., Vucaj-Cirilović, V., Hodolić, J.,& Todorović, A.. (2013). Comparative analysis of 3d digitization systems in the field of dental prosthetics. in Tehnički vjesnik
Faculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering in Osijek., 20(2), 291-296.
https://hdl.handle.net/21.15107/rcub_smile_1845
Budak I, Trifković B, Puškar T, Vukelić Đ, Vucaj-Cirilović V, Hodolić J, Todorović A. Comparative analysis of 3d digitization systems in the field of dental prosthetics. in Tehnički vjesnik. 2013;20(2):291-296.
https://hdl.handle.net/21.15107/rcub_smile_1845 .
Budak, Igor, Trifković, Branka, Puškar, Tatjana, Vukelić, Đorđe, Vucaj-Cirilović, Viktorija, Hodolić, Janko, Todorović, Aleksandar, "Comparative analysis of 3d digitization systems in the field of dental prosthetics" in Tehnički vjesnik, 20, no. 2 (2013):291-296,
https://hdl.handle.net/21.15107/rcub_smile_1845 .
11
12

Free-end saddle length influence on stress level in unilateral complex partial denture abutment teeth and retention elements

Patrnogić, Vesna; Todorović, Aleksandar; Šćepanović, Miodrag; Radović, Katarina; Vesnić, Jelena; Grbović, Aleksandar

(Vojnomedicinska akademija - Institut za naučne informacije, Beograd, 2013)

TY  - JOUR
AU  - Patrnogić, Vesna
AU  - Todorović, Aleksandar
AU  - Šćepanović, Miodrag
AU  - Radović, Katarina
AU  - Vesnić, Jelena
AU  - Grbović, Aleksandar
PY  - 2013
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1812
AB  - Background/Aim. Different types of dental restorations are used for the therapy of unilateral free-end saddle edentulism. Unilateral complex partial denture is one of the indications for the Kennedy class II partial edentulism. The abscence of major connector and denture plate is an advantage compared to the conventional restorations, because of better comfort and shorter period of adaptation. The aim of the study was to analyse the influence of free-end saddle length change on the behaviour of unilateral complex partial denture supporting structures. Methods. Stress levels of the canine and the first premolar as retentional teeth and the attachments were tested under the influence of physiological forces with the loading point shifting distally in relation to the saddle length change. A virtual real size 3D model of the fixed part of the restoration (the canine and the first premolar with milled crowns) was created using the CATIA computer program. It was connected to the mobile part of partial denture with the SD snap in latch attachment. Mobile part of the restoration was designed in the region of 2, 3 and 4 lateral teeth (second premolar, first, second and third molar). By using the finite element method (FEM) stress levels analysis was performed under the load of physiological forces of 150 N in the free-end saddle teeth zone. Results. The results of analysis show that physiological forces cause a different stress distribution on the abutment teeth and the attachment, depending on the saddle length. Conclusion. The stress level values obtained for the abutment teeth as well as the attachment are far lower than the marginal ones. The behaviour of the system changes under this defined stress, but no plastic deformation occurs.
AB  - Uvod/Cilj. U terapiji jednostrano slobodnog sedla koriste se različiti oblici zubnih nadoknada. Jednostrana kompleksna parcijalna proteza (JKPP) jedna je od indikacija za bezubost klase Kenedi II. Odsustvo velike spojnice i protezne ploče predstavlja prednost u odnosu na konvencionalne nadoknade zbog boljeg komfora i kraćeg perioda adaptacije. Cilj rada bio je analiza uticaja promene dužine slobodnog sedla na ponašanje potpornih struktura JKPP. Metode. Ispitivani su naponi očnjaka i prvog premolara kao retencionih zuba i veze (spoja) pod dejstvom fizioloških sila sa pomeranjem tačke opterećenja distalno, u zavisnosti od dužine sedla. Primenom kompjuterskog programa CATIA u realnoj veličini urađen je virtulni 3D model fiksnog dela nadoknade (očnjak i prvi premolar sa namenskim krunama) koji je veza SD snap in latch priključena na mobilni deo parcijalne proteze. Mobilni deo nadoknade postavljen je u predelu dva, tri, odnosno četiri bočna zuba (drugi premolar, prvi, drugi i treći molar). Primenom metode konačnih elemenata obavljena je analiza naponskih stanja pri opterećenju fiziološkim silama od 150 N u predelu zuba slobodnog sedla. Rezultati. Analiza proračuna pokazala je da pod dejstvom fizioloških sila dolazi do različite raspodele napona na retencione zube i spoj u zavisnosti od dužine sedla. Zaključak. Dobijene vrednosti za napone kako na retencionim zubima, tako i na spoju, daleko su manje od graničnih. Pri zadatim naponima dolazi do promene ponašanja, ali ne i do plastične deformacije sistema.
PB  - Vojnomedicinska akademija - Institut za naučne informacije, Beograd
T2  - Vojnosanitetski pregled
T1  - Free-end saddle length influence on stress level in unilateral complex partial denture abutment teeth and retention elements
T1  - Uticaj promene dužine slobodnog sedla na promenu napona retencionih zuba i spoja jednostrane kompleksne parcijalne proteze
VL  - 70
IS  - 11
SP  - 1015
EP  - 1022
DO  - 10.2298/VSP110603028P
ER  - 
@article{
author = "Patrnogić, Vesna and Todorović, Aleksandar and Šćepanović, Miodrag and Radović, Katarina and Vesnić, Jelena and Grbović, Aleksandar",
year = "2013",
abstract = "Background/Aim. Different types of dental restorations are used for the therapy of unilateral free-end saddle edentulism. Unilateral complex partial denture is one of the indications for the Kennedy class II partial edentulism. The abscence of major connector and denture plate is an advantage compared to the conventional restorations, because of better comfort and shorter period of adaptation. The aim of the study was to analyse the influence of free-end saddle length change on the behaviour of unilateral complex partial denture supporting structures. Methods. Stress levels of the canine and the first premolar as retentional teeth and the attachments were tested under the influence of physiological forces with the loading point shifting distally in relation to the saddle length change. A virtual real size 3D model of the fixed part of the restoration (the canine and the first premolar with milled crowns) was created using the CATIA computer program. It was connected to the mobile part of partial denture with the SD snap in latch attachment. Mobile part of the restoration was designed in the region of 2, 3 and 4 lateral teeth (second premolar, first, second and third molar). By using the finite element method (FEM) stress levels analysis was performed under the load of physiological forces of 150 N in the free-end saddle teeth zone. Results. The results of analysis show that physiological forces cause a different stress distribution on the abutment teeth and the attachment, depending on the saddle length. Conclusion. The stress level values obtained for the abutment teeth as well as the attachment are far lower than the marginal ones. The behaviour of the system changes under this defined stress, but no plastic deformation occurs., Uvod/Cilj. U terapiji jednostrano slobodnog sedla koriste se različiti oblici zubnih nadoknada. Jednostrana kompleksna parcijalna proteza (JKPP) jedna je od indikacija za bezubost klase Kenedi II. Odsustvo velike spojnice i protezne ploče predstavlja prednost u odnosu na konvencionalne nadoknade zbog boljeg komfora i kraćeg perioda adaptacije. Cilj rada bio je analiza uticaja promene dužine slobodnog sedla na ponašanje potpornih struktura JKPP. Metode. Ispitivani su naponi očnjaka i prvog premolara kao retencionih zuba i veze (spoja) pod dejstvom fizioloških sila sa pomeranjem tačke opterećenja distalno, u zavisnosti od dužine sedla. Primenom kompjuterskog programa CATIA u realnoj veličini urađen je virtulni 3D model fiksnog dela nadoknade (očnjak i prvi premolar sa namenskim krunama) koji je veza SD snap in latch priključena na mobilni deo parcijalne proteze. Mobilni deo nadoknade postavljen je u predelu dva, tri, odnosno četiri bočna zuba (drugi premolar, prvi, drugi i treći molar). Primenom metode konačnih elemenata obavljena je analiza naponskih stanja pri opterećenju fiziološkim silama od 150 N u predelu zuba slobodnog sedla. Rezultati. Analiza proračuna pokazala je da pod dejstvom fizioloških sila dolazi do različite raspodele napona na retencione zube i spoj u zavisnosti od dužine sedla. Zaključak. Dobijene vrednosti za napone kako na retencionim zubima, tako i na spoju, daleko su manje od graničnih. Pri zadatim naponima dolazi do promene ponašanja, ali ne i do plastične deformacije sistema.",
publisher = "Vojnomedicinska akademija - Institut za naučne informacije, Beograd",
journal = "Vojnosanitetski pregled",
title = "Free-end saddle length influence on stress level in unilateral complex partial denture abutment teeth and retention elements, Uticaj promene dužine slobodnog sedla na promenu napona retencionih zuba i spoja jednostrane kompleksne parcijalne proteze",
volume = "70",
number = "11",
pages = "1015-1022",
doi = "10.2298/VSP110603028P"
}
Patrnogić, V., Todorović, A., Šćepanović, M., Radović, K., Vesnić, J.,& Grbović, A.. (2013). Free-end saddle length influence on stress level in unilateral complex partial denture abutment teeth and retention elements. in Vojnosanitetski pregled
Vojnomedicinska akademija - Institut za naučne informacije, Beograd., 70(11), 1015-1022.
https://doi.org/10.2298/VSP110603028P
Patrnogić V, Todorović A, Šćepanović M, Radović K, Vesnić J, Grbović A. Free-end saddle length influence on stress level in unilateral complex partial denture abutment teeth and retention elements. in Vojnosanitetski pregled. 2013;70(11):1015-1022.
doi:10.2298/VSP110603028P .
Patrnogić, Vesna, Todorović, Aleksandar, Šćepanović, Miodrag, Radović, Katarina, Vesnić, Jelena, Grbović, Aleksandar, "Free-end saddle length influence on stress level in unilateral complex partial denture abutment teeth and retention elements" in Vojnosanitetski pregled, 70, no. 11 (2013):1015-1022,
https://doi.org/10.2298/VSP110603028P . .
9
4
9

Reliability of conventional shade guides in teeth color determination

Todorović, Ana; Todorović, Aleksandar; Špadijer-Gostović, Aleksandra; Lazić, Vojkan; Miličić, Biljana; Đurišić, Slobodan

(Vojnomedicinska akademija - Institut za naučne informacije, Beograd, 2013)

TY  - JOUR
AU  - Todorović, Ana
AU  - Todorović, Aleksandar
AU  - Špadijer-Gostović, Aleksandra
AU  - Lazić, Vojkan
AU  - Miličić, Biljana
AU  - Đurišić, Slobodan
PY  - 2013
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1801
AB  - Background/Aim. Color matching in prosthodontic therapy is a very important task because it influences the esthetic value of dental restorations. Visual shade matching represents the most frequently applied method in clinical practice. Instrumental measurements provide objective and quantified data in color assessment of natural teeth and restorations. In instrumental shade analysis, the goal is to achieve the smallest ΔE value possible, indicating the most accurate shade match. The aim of this study was to evaluate the reliability of commercially available ceramic shade guides. Methods. VITA Easyshade spectrophotometer (VITA, Germany) was used for instrumental color determination. Utilizing this device, color samples of ten VITA Classical and ten VITA 3D - Master shade guides were analyzed. Each color sample from all shade guides was measured three times and the basic parameters of color quality were examined: ΔL, ΔC, ΔH, ΔE, ΔElc. Based on these parameters spectrophotometer marks the shade matching as good, fair or adjust. Results. After performing 1,248 measurements of ceramic color samples, frequency of evaluations adjust, fair and good were statistically significantly different between VITA Classical and VITA 3D Master shade guides (p = 0.002). There were 27.1% cases scored as adjust, 66.3% as fair and 6.7% as good. In VITA 3D - Master shade guides 30.9% cases were evaluated as adjust, 66.4% as fair and 2.7% cases as good. Conclusion. Color samples from different shade guides, produced by the same manufacturer, show variability in basic color parameters, which once again proves the lack of precision and nonuniformity of the conventional method.
AB  - Uvod/Cilj. Određivanje boje zuba u protetskoj terapiji predstavlja veoma važan zadatak jer utiče na prirodan izgled i estetsku vrednost zubnih nadoknada. Vizuelni metod određivanja boje zuba najčešće se koristi u kliničkoj praksi. Instrumentalna merenja pružaju objektivne i kvantifikovane podatke u proceni boje prirodnih zuba i restauracija. U instrumentalnoj analizi boje cilj je da se postigne najmanja moguća vrednost ΔE, što predstavlja najtačniji izbor nijanse. Cilj ovog istraživanja bio je da se utvrdi pouzdanost najčešće korišćenih ključeva za određivanje boje zuba. Metode. Za instrumentalni izbor boje korišćen je VITA Easyshade spektrofotometar (VITA, Germany). Uz pomoć ovog uređaja, analizirani su uzorci boja 10 VITA Classical i 10 VITA 3D - Master ključeva boja. Svaki uzorak boje analiziran je tri puta i ispitivani su osnovni parametri kvaliteta boje: ΔL, ΔC, ΔH, ΔE, ΔElc. Stepen poklapanje boje nadoknade sa ciljnom nijansom spektrofotometar izražava kroz tri ocene kvaliteta: good, fair i adjust. Rezultati. Nakon izvršenih 1 248 merenja keramičkih uzoraka boje, frekvencije ocena adjust, fair i good statistički su se značajno razlikovale između VITA Classical i VITA 3D - Master ključeva boja (p = 0.002). U VITA Classical ključu boja bilo je 27,1% ocene adjust, 66,3% fair i 6,7% ocene good. U VITA 3D - Master ključu boja bilo je 30,9% ocene adjust, 66,4% fair i 2,7% ocene good. Zaključak. Uzorci boje iz različitih ključeva boja proizvedenih od istog proizvođača, pokazuju varijabilnost u osnovnim parametrima boje, što ukazuje na nepreciznost i neuniformnost konvencionalne metode.
PB  - Vojnomedicinska akademija - Institut za naučne informacije, Beograd
T2  - Vojnosanitetski pregled
T1  - Reliability of conventional shade guides in teeth color determination
T1  - Pouzdanost primene konvencionalnih ključeva za određivanje boje zuba
VL  - 70
IS  - 10
SP  - 929
EP  - 934
DO  - 10.2298/VSP110513019T
ER  - 
@article{
author = "Todorović, Ana and Todorović, Aleksandar and Špadijer-Gostović, Aleksandra and Lazić, Vojkan and Miličić, Biljana and Đurišić, Slobodan",
year = "2013",
abstract = "Background/Aim. Color matching in prosthodontic therapy is a very important task because it influences the esthetic value of dental restorations. Visual shade matching represents the most frequently applied method in clinical practice. Instrumental measurements provide objective and quantified data in color assessment of natural teeth and restorations. In instrumental shade analysis, the goal is to achieve the smallest ΔE value possible, indicating the most accurate shade match. The aim of this study was to evaluate the reliability of commercially available ceramic shade guides. Methods. VITA Easyshade spectrophotometer (VITA, Germany) was used for instrumental color determination. Utilizing this device, color samples of ten VITA Classical and ten VITA 3D - Master shade guides were analyzed. Each color sample from all shade guides was measured three times and the basic parameters of color quality were examined: ΔL, ΔC, ΔH, ΔE, ΔElc. Based on these parameters spectrophotometer marks the shade matching as good, fair or adjust. Results. After performing 1,248 measurements of ceramic color samples, frequency of evaluations adjust, fair and good were statistically significantly different between VITA Classical and VITA 3D Master shade guides (p = 0.002). There were 27.1% cases scored as adjust, 66.3% as fair and 6.7% as good. In VITA 3D - Master shade guides 30.9% cases were evaluated as adjust, 66.4% as fair and 2.7% cases as good. Conclusion. Color samples from different shade guides, produced by the same manufacturer, show variability in basic color parameters, which once again proves the lack of precision and nonuniformity of the conventional method., Uvod/Cilj. Određivanje boje zuba u protetskoj terapiji predstavlja veoma važan zadatak jer utiče na prirodan izgled i estetsku vrednost zubnih nadoknada. Vizuelni metod određivanja boje zuba najčešće se koristi u kliničkoj praksi. Instrumentalna merenja pružaju objektivne i kvantifikovane podatke u proceni boje prirodnih zuba i restauracija. U instrumentalnoj analizi boje cilj je da se postigne najmanja moguća vrednost ΔE, što predstavlja najtačniji izbor nijanse. Cilj ovog istraživanja bio je da se utvrdi pouzdanost najčešće korišćenih ključeva za određivanje boje zuba. Metode. Za instrumentalni izbor boje korišćen je VITA Easyshade spektrofotometar (VITA, Germany). Uz pomoć ovog uređaja, analizirani su uzorci boja 10 VITA Classical i 10 VITA 3D - Master ključeva boja. Svaki uzorak boje analiziran je tri puta i ispitivani su osnovni parametri kvaliteta boje: ΔL, ΔC, ΔH, ΔE, ΔElc. Stepen poklapanje boje nadoknade sa ciljnom nijansom spektrofotometar izražava kroz tri ocene kvaliteta: good, fair i adjust. Rezultati. Nakon izvršenih 1 248 merenja keramičkih uzoraka boje, frekvencije ocena adjust, fair i good statistički su se značajno razlikovale između VITA Classical i VITA 3D - Master ključeva boja (p = 0.002). U VITA Classical ključu boja bilo je 27,1% ocene adjust, 66,3% fair i 6,7% ocene good. U VITA 3D - Master ključu boja bilo je 30,9% ocene adjust, 66,4% fair i 2,7% ocene good. Zaključak. Uzorci boje iz različitih ključeva boja proizvedenih od istog proizvođača, pokazuju varijabilnost u osnovnim parametrima boje, što ukazuje na nepreciznost i neuniformnost konvencionalne metode.",
publisher = "Vojnomedicinska akademija - Institut za naučne informacije, Beograd",
journal = "Vojnosanitetski pregled",
title = "Reliability of conventional shade guides in teeth color determination, Pouzdanost primene konvencionalnih ključeva za određivanje boje zuba",
volume = "70",
number = "10",
pages = "929-934",
doi = "10.2298/VSP110513019T"
}
Todorović, A., Todorović, A., Špadijer-Gostović, A., Lazić, V., Miličić, B.,& Đurišić, S.. (2013). Reliability of conventional shade guides in teeth color determination. in Vojnosanitetski pregled
Vojnomedicinska akademija - Institut za naučne informacije, Beograd., 70(10), 929-934.
https://doi.org/10.2298/VSP110513019T
Todorović A, Todorović A, Špadijer-Gostović A, Lazić V, Miličić B, Đurišić S. Reliability of conventional shade guides in teeth color determination. in Vojnosanitetski pregled. 2013;70(10):929-934.
doi:10.2298/VSP110513019T .
Todorović, Ana, Todorović, Aleksandar, Špadijer-Gostović, Aleksandra, Lazić, Vojkan, Miličić, Biljana, Đurišić, Slobodan, "Reliability of conventional shade guides in teeth color determination" in Vojnosanitetski pregled, 70, no. 10 (2013):929-934,
https://doi.org/10.2298/VSP110513019T . .
15
8
12

Finite element analysis in defining the optimal shape and safety factor of retentive clasp arms of a removable partial denture

Šćepanović, Miodrag; Tihaček-Šojić, Ljiljana; Tasić, Milan; Mitrović, Radivoje; Todorović, Aleksandar; Trifković, Branka

(Vojnomedicinska akademija - Institut za naučne informacije, Beograd, 2013)

TY  - JOUR
AU  - Šćepanović, Miodrag
AU  - Tihaček-Šojić, Ljiljana
AU  - Tasić, Milan
AU  - Mitrović, Radivoje
AU  - Todorović, Aleksandar
AU  - Trifković, Branka
PY  - 2013
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1783
AB  - Bacground/Aim. Retentive force of removable partial denture (RPD) directly depends on elastic force of stretched retentive clasp arms (RCAs). During deflection RCA must have even stress distribution. Safety factor is the concept which can be applied in estimating durability and functionality of RCAs. This study was based on analyzing properties of clasps designed by conventional clasp wax profiles and defining the optimal shapes of RCAs for stress distribution and safety factor aspects. Methods. Computer-aided-design (CAD) models of RCAs with simulated properties of materials used for fabrication of RPD cobalt-chromium-molybdenum (CoCrMo) alloy, commercially pure titanium (CPTi) and polyacetale were analyzed. Results. The research showed that geometrics of Rapidflex profiles from the BIOS concept are defined for designing and modeling RCAs from CoCrMo alloys. I-Bar and Bonihard clasps made from CPTi might have the same design as Co- CrMo clasp only by safety factor aspect, but it is obvious that CPTi are much more flexible, so their shape must be more massive. Polyacetale clasps should not be fabricated by BIOS concept for CoCrMo alloy. A proof for that is the low value of safety factor. Conclusion. The BIOS concept should be used only for RCAs made of CoCrMo alloy and different wax profiles should be used for fabricating clasps of other investigated materials. The contribution of this study may be the improvement of present systems for defining the clasps shapes made from CoCrMo alloys. The more significant application is the possibility of creating new concepts in defining shapes of RCA made from CPTi and polyacetale.
AB  - Uvod/Cilj. Retenciona sila parcijalne skeletirane proteze (PSP) direktno zavisi od elastične sile rastegnute kukice. Da bi uspešno obavile svoju ulogu, retencione ručice kukice (RRK) prilikom defleksije moraju imati što ravnomerniju raspodelu napona. Stepen sigurnosti je pojam koji se može primeniti u proceni trajnosti i funkcionalnosti RRK. Ciljevi ove studije bili su analiziranje svojstava kukica koje su urađene pomoću konvencionalnih voštanih profila za izradu RRK, kao i definisanje optimalnih oblika RRK sa aspekta raspodele napona i stepena sigurnosti. Metode. Analizirani su CAD (computer aided design) modeli RRK kojima su simulirana svojstva gradivnih materijala koji se koriste za izradu legura: CoCrMo, komercijalno čist titan (CPTi) i poliacetal. Rezultati. Rezultati su pokazali da je geometrija Rapid-flex profila, korišćenih u okviru BIOS, definisana za projektovanje i modeliranje RRK koje se izrađuju od legure (CoCrMo). I Bar i Bonihard kukice od CPTi mogu se uraditi po istom konceptu kao i legure CoCrMo sa aspekta stepena sigurnosti, međutim, titanijumske kukice bile su znatno elastičnije i stoga su morale biti masivnije. Kukice od poliacetala ne smeju se modelovati po BIOS konceptu za leguru Co-CrMo. Dokaz za to je vrlo mali stepen sigurnosti. Zaključak. BIOS koncept može da se koristiti samo za RRK koje se izrađuju od legure CoCrMo. Za izradu kukica od ostalih ispitivanih materijala neophodni su drugačiji voštani profili. Doprinos studije predstavlja i poboljšavanje postojećih sistema za definisanje oblika RRK izrađenih od legura CoCrMo. Značajnija primena rezultata je i mogućnost stvaranja novih sistema za definisanje oblika RRK od CPTi i poliacetala.
PB  - Vojnomedicinska akademija - Institut za naučne informacije, Beograd
T2  - Vojnosanitetski pregled
T1  - Finite element analysis in defining the optimal shape and safety factor of retentive clasp arms of a removable partial denture
T1  - Definisanje optimalnog oblika i faktora sigurnosti retencionih ručica kukica parcijalnih skeletiranih proteza metodom konačnih elemenata
VL  - 70
IS  - 11
SP  - 999
EP  - 1005
DO  - 10.2298/VSP110526021S
ER  - 
@article{
author = "Šćepanović, Miodrag and Tihaček-Šojić, Ljiljana and Tasić, Milan and Mitrović, Radivoje and Todorović, Aleksandar and Trifković, Branka",
year = "2013",
abstract = "Bacground/Aim. Retentive force of removable partial denture (RPD) directly depends on elastic force of stretched retentive clasp arms (RCAs). During deflection RCA must have even stress distribution. Safety factor is the concept which can be applied in estimating durability and functionality of RCAs. This study was based on analyzing properties of clasps designed by conventional clasp wax profiles and defining the optimal shapes of RCAs for stress distribution and safety factor aspects. Methods. Computer-aided-design (CAD) models of RCAs with simulated properties of materials used for fabrication of RPD cobalt-chromium-molybdenum (CoCrMo) alloy, commercially pure titanium (CPTi) and polyacetale were analyzed. Results. The research showed that geometrics of Rapidflex profiles from the BIOS concept are defined for designing and modeling RCAs from CoCrMo alloys. I-Bar and Bonihard clasps made from CPTi might have the same design as Co- CrMo clasp only by safety factor aspect, but it is obvious that CPTi are much more flexible, so their shape must be more massive. Polyacetale clasps should not be fabricated by BIOS concept for CoCrMo alloy. A proof for that is the low value of safety factor. Conclusion. The BIOS concept should be used only for RCAs made of CoCrMo alloy and different wax profiles should be used for fabricating clasps of other investigated materials. The contribution of this study may be the improvement of present systems for defining the clasps shapes made from CoCrMo alloys. The more significant application is the possibility of creating new concepts in defining shapes of RCA made from CPTi and polyacetale., Uvod/Cilj. Retenciona sila parcijalne skeletirane proteze (PSP) direktno zavisi od elastične sile rastegnute kukice. Da bi uspešno obavile svoju ulogu, retencione ručice kukice (RRK) prilikom defleksije moraju imati što ravnomerniju raspodelu napona. Stepen sigurnosti je pojam koji se može primeniti u proceni trajnosti i funkcionalnosti RRK. Ciljevi ove studije bili su analiziranje svojstava kukica koje su urađene pomoću konvencionalnih voštanih profila za izradu RRK, kao i definisanje optimalnih oblika RRK sa aspekta raspodele napona i stepena sigurnosti. Metode. Analizirani su CAD (computer aided design) modeli RRK kojima su simulirana svojstva gradivnih materijala koji se koriste za izradu legura: CoCrMo, komercijalno čist titan (CPTi) i poliacetal. Rezultati. Rezultati su pokazali da je geometrija Rapid-flex profila, korišćenih u okviru BIOS, definisana za projektovanje i modeliranje RRK koje se izrađuju od legure (CoCrMo). I Bar i Bonihard kukice od CPTi mogu se uraditi po istom konceptu kao i legure CoCrMo sa aspekta stepena sigurnosti, međutim, titanijumske kukice bile su znatno elastičnije i stoga su morale biti masivnije. Kukice od poliacetala ne smeju se modelovati po BIOS konceptu za leguru Co-CrMo. Dokaz za to je vrlo mali stepen sigurnosti. Zaključak. BIOS koncept može da se koristiti samo za RRK koje se izrađuju od legure CoCrMo. Za izradu kukica od ostalih ispitivanih materijala neophodni su drugačiji voštani profili. Doprinos studije predstavlja i poboljšavanje postojećih sistema za definisanje oblika RRK izrađenih od legura CoCrMo. Značajnija primena rezultata je i mogućnost stvaranja novih sistema za definisanje oblika RRK od CPTi i poliacetala.",
publisher = "Vojnomedicinska akademija - Institut za naučne informacije, Beograd",
journal = "Vojnosanitetski pregled",
title = "Finite element analysis in defining the optimal shape and safety factor of retentive clasp arms of a removable partial denture, Definisanje optimalnog oblika i faktora sigurnosti retencionih ručica kukica parcijalnih skeletiranih proteza metodom konačnih elemenata",
volume = "70",
number = "11",
pages = "999-1005",
doi = "10.2298/VSP110526021S"
}
Šćepanović, M., Tihaček-Šojić, L., Tasić, M., Mitrović, R., Todorović, A.,& Trifković, B.. (2013). Finite element analysis in defining the optimal shape and safety factor of retentive clasp arms of a removable partial denture. in Vojnosanitetski pregled
Vojnomedicinska akademija - Institut za naučne informacije, Beograd., 70(11), 999-1005.
https://doi.org/10.2298/VSP110526021S
Šćepanović M, Tihaček-Šojić L, Tasić M, Mitrović R, Todorović A, Trifković B. Finite element analysis in defining the optimal shape and safety factor of retentive clasp arms of a removable partial denture. in Vojnosanitetski pregled. 2013;70(11):999-1005.
doi:10.2298/VSP110526021S .
Šćepanović, Miodrag, Tihaček-Šojić, Ljiljana, Tasić, Milan, Mitrović, Radivoje, Todorović, Aleksandar, Trifković, Branka, "Finite element analysis in defining the optimal shape and safety factor of retentive clasp arms of a removable partial denture" in Vojnosanitetski pregled, 70, no. 11 (2013):999-1005,
https://doi.org/10.2298/VSP110526021S . .
3
1
4

In-vitro evaluation of the retention of different prefabricated posts luted with different cements

Maksimović, Miloš; Špadijer-Gostović, Aleksandra; Todorović, Aleksandar; Romcević, Nebojsa; Rudolf, Rebeka; Todorović, Ana

(Institute of Metals and Technology, 2012)

TY  - JOUR
AU  - Maksimović, Miloš
AU  - Špadijer-Gostović, Aleksandra
AU  - Todorović, Aleksandar
AU  - Romcević, Nebojsa
AU  - Rudolf, Rebeka
AU  - Todorović, Ana
PY  - 2012
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1685
AB  - The aim of this study was to assess and compare the mechanical resistance and the retentive force of metal and composite post systems cemented with different types of cements. Three different designs of prefabricated titanium alloy posts were used in the study, i.e., active, passive and combined, as well as AgPd cast posts and two different fibre-reinforced composite post systems. In accordance with the experimental design these posts were cemented with zinc phosphate, self-curing composite resin or self-adhesive, self-etching, luting agent. Comparing the results between the different metal post designs, cemented with zinc phosphate, a statistically significant difference in the retention was found between all the analysed posts. The best results with the pull-out test were obtained with the active posts, then the passive, followed by the combined posts. The metal cast posts cemented conventionally with Zn-phosphate demonstrated the lowest retentive force value, based on all the measurements. The bond strengths between the post and the root dentine were influenced statistically by the post design (active, passive, combined or cast) and material, metal vs. composite. The active Ti posts showed significantly superior retention in combination with all the cements. The Ti alloy posts achieved higher retentive force values than the composite posts, in general. The composite cements compared to the Zn-phosphate ensure a better retentive strength for all the posts, including individually cast posts.
PB  - Institute of Metals and Technology
T2  - Materiali in Tehnologije
T1  - In-vitro evaluation of the retention of different prefabricated posts luted with different cements
VL  - 46
IS  - 6
SP  - 595
EP  - 599
UR  - https://hdl.handle.net/21.15107/rcub_smile_1685
ER  - 
@article{
author = "Maksimović, Miloš and Špadijer-Gostović, Aleksandra and Todorović, Aleksandar and Romcević, Nebojsa and Rudolf, Rebeka and Todorović, Ana",
year = "2012",
abstract = "The aim of this study was to assess and compare the mechanical resistance and the retentive force of metal and composite post systems cemented with different types of cements. Three different designs of prefabricated titanium alloy posts were used in the study, i.e., active, passive and combined, as well as AgPd cast posts and two different fibre-reinforced composite post systems. In accordance with the experimental design these posts were cemented with zinc phosphate, self-curing composite resin or self-adhesive, self-etching, luting agent. Comparing the results between the different metal post designs, cemented with zinc phosphate, a statistically significant difference in the retention was found between all the analysed posts. The best results with the pull-out test were obtained with the active posts, then the passive, followed by the combined posts. The metal cast posts cemented conventionally with Zn-phosphate demonstrated the lowest retentive force value, based on all the measurements. The bond strengths between the post and the root dentine were influenced statistically by the post design (active, passive, combined or cast) and material, metal vs. composite. The active Ti posts showed significantly superior retention in combination with all the cements. The Ti alloy posts achieved higher retentive force values than the composite posts, in general. The composite cements compared to the Zn-phosphate ensure a better retentive strength for all the posts, including individually cast posts.",
publisher = "Institute of Metals and Technology",
journal = "Materiali in Tehnologije",
title = "In-vitro evaluation of the retention of different prefabricated posts luted with different cements",
volume = "46",
number = "6",
pages = "595-599",
url = "https://hdl.handle.net/21.15107/rcub_smile_1685"
}
Maksimović, M., Špadijer-Gostović, A., Todorović, A., Romcević, N., Rudolf, R.,& Todorović, A.. (2012). In-vitro evaluation of the retention of different prefabricated posts luted with different cements. in Materiali in Tehnologije
Institute of Metals and Technology., 46(6), 595-599.
https://hdl.handle.net/21.15107/rcub_smile_1685
Maksimović M, Špadijer-Gostović A, Todorović A, Romcević N, Rudolf R, Todorović A. In-vitro evaluation of the retention of different prefabricated posts luted with different cements. in Materiali in Tehnologije. 2012;46(6):595-599.
https://hdl.handle.net/21.15107/rcub_smile_1685 .
Maksimović, Miloš, Špadijer-Gostović, Aleksandra, Todorović, Aleksandar, Romcević, Nebojsa, Rudolf, Rebeka, Todorović, Ana, "In-vitro evaluation of the retention of different prefabricated posts luted with different cements" in Materiali in Tehnologije, 46, no. 6 (2012):595-599,
https://hdl.handle.net/21.15107/rcub_smile_1685 .

Immediate implant loading with fixed dental restorations: An animal model study

Špadijer-Gostović, Aleksandra; Todorović, Aleksandar; Lazić, Vojkan; Todorović, Ana; Milinković, Iva; Leković, Vojislav

(Vojnomedicinska akademija - Institut za naučne informacije, Beograd, 2012)

TY  - JOUR
AU  - Špadijer-Gostović, Aleksandra
AU  - Todorović, Aleksandar
AU  - Lazić, Vojkan
AU  - Todorović, Ana
AU  - Milinković, Iva
AU  - Leković, Vojislav
PY  - 2012
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1716
AB  - Background/Aim. Immediate loading is considered to be the most innovative technique in contemporary implant dentistry. Recent clinical and experimental findings have demonstrated that only implants with high primary stability can be subjected to immediate loading protocol with predictable results. It is generally accepted that the most important prerequsite for successful osseointegration is achievement and maintenance of implant stability. The aim of this in vivo study was to investigate the possibility for successful application of immediate loading protocol in implant systems with different surface properties. Methods. In the experimental study 2 mongrel dogs were edentulated bilaterally in the mandibular and maxillary premolar areas. After 3 months implants were placed in a pattern 4 different commercially available implants per quadrant (n = 32): Mk III TiUnite (Nobel Biocare, Sweden), ITI TPS (Straumann, Switzerland), 3IOsseotite (Implant Innovation, USA) and XiVE Cell-Plus (Friadent, Germany). Implants were subjected to immediate loading with 4 unit gold cast bridges, 2 days post implantation. The assessment of implant stability and immediate loading possibilities were done by performing Resonance frequency analysis (RFA). Results. After a 6- month loading period all bridges were in function and all implants occurred well osseointegrated. When summarizing the Implant Stability Quotient (ISQ) values, it was noted that resonance frequency was significantly higher for mandibular implants. The results of this experimental setting showed that all evaluated surfaces achieved good implant stability. Increase of ISQ values was found for all implants in the mandible and partially decrease of ISQ values for maxillary implants after 6 months of functional loading with 4 unit bridges. Conclusions. Investigated endooseal implants did not show different degree of osseointegration, because there was not statistically significant difference among observed parameters (ISQh i ISQp) between implant systems.
AB  - Uvod/Cilj. Imedijatno opterećenje implantata smatra se jednim od najznačajnijih dostignuća savremene dentalne implantologije. Rezultati novijih kliničkih i eksperimentalnih studija pokazali su da samo implantati visoke primarne stabilnosti mogu biti izloženi protokolu imedijatnog opterećenja zubnom nadoknadom sa predvidivim ishodom. Cilj studije bio je da se ispita mogućnost uspešne primene protokola imedijatnog opterećenja implantata različitog mikrodizajna fiksnim zubnim nadoknadama. Metode. U eksperimentalno istraživanje uključena su dva psa, obezubljena obostrano u premolarnoj regiji gornje i donje vilice. Nakon tri meseca od ekstrakcije zuba, ugrađena su, po predviđenoj šemi, četiri različita implantata po kvadrantu (n = 32): Mk III TiUnite (Nobel Biocare, Sweden), ITI TPS (Straumann, Switzerland), 3I-Osseotite (Implant Innovation, USA) i XiVE Cell-Plus (Friadent, Germany). Implantati su imedijatno opterećeni fiksnim zubnim nadoknadama, četvoročlanim mostovima od plemenite legure zlato-platina, dva dana posle implantacije. Stabilnost implantata i mogućnost imedijatnog opterećenja ocenjivana je na osnovu analize rezonantnih frekvencija (RFA). Rezultati. Šest meseci nakon implantacije i imedijatnog opterećenja fiksnom zubnom nadoknadom, svi mostovi bili su u funkciji i svi implantati uspešno integrisani, ne pokazujući znake mobilnosti. Sumiranjem dobijenih vrednosti koeficijenta stabilnosti implantata (ISQ) ustanovljeno je da su rezonantne frekvencije bile značajno veće kod implantata u donjoj vilici. Rezultati eksperimentalnog istraživanja pokazali su da su sve analizirane površine ostvarile dobru implantatnu stabilnost. Utvrđen je porast ISQ vrednosti kod svih implantata u mandibuli i delimičan pad ISQ vrednosti za implantate u maksili, nakon šest meseci funkcionalnog opterećenja fiksnim zubnim nadoknadama. Zaključak. Ispitivani endoosealni implantati nisu pokazali različit stepen oseointegracije jer se rezultati merenih parametara hirurških (ISQh) i protetkih (ISQp), nisu statistički značajno razlikovali između implantatnih sistema.
PB  - Vojnomedicinska akademija - Institut za naučne informacije, Beograd
T2  - Vojnosanitetski pregled
T1  - Immediate implant loading with fixed dental restorations: An animal model study
T1  - Imedijatno opterećenje implantata fiksnim zubnim nadoknadama - studija na psima
VL  - 69
IS  - 2
SP  - 181
EP  - 189
DO  - 10.2298/VSP1202181S
ER  - 
@article{
author = "Špadijer-Gostović, Aleksandra and Todorović, Aleksandar and Lazić, Vojkan and Todorović, Ana and Milinković, Iva and Leković, Vojislav",
year = "2012",
abstract = "Background/Aim. Immediate loading is considered to be the most innovative technique in contemporary implant dentistry. Recent clinical and experimental findings have demonstrated that only implants with high primary stability can be subjected to immediate loading protocol with predictable results. It is generally accepted that the most important prerequsite for successful osseointegration is achievement and maintenance of implant stability. The aim of this in vivo study was to investigate the possibility for successful application of immediate loading protocol in implant systems with different surface properties. Methods. In the experimental study 2 mongrel dogs were edentulated bilaterally in the mandibular and maxillary premolar areas. After 3 months implants were placed in a pattern 4 different commercially available implants per quadrant (n = 32): Mk III TiUnite (Nobel Biocare, Sweden), ITI TPS (Straumann, Switzerland), 3IOsseotite (Implant Innovation, USA) and XiVE Cell-Plus (Friadent, Germany). Implants were subjected to immediate loading with 4 unit gold cast bridges, 2 days post implantation. The assessment of implant stability and immediate loading possibilities were done by performing Resonance frequency analysis (RFA). Results. After a 6- month loading period all bridges were in function and all implants occurred well osseointegrated. When summarizing the Implant Stability Quotient (ISQ) values, it was noted that resonance frequency was significantly higher for mandibular implants. The results of this experimental setting showed that all evaluated surfaces achieved good implant stability. Increase of ISQ values was found for all implants in the mandible and partially decrease of ISQ values for maxillary implants after 6 months of functional loading with 4 unit bridges. Conclusions. Investigated endooseal implants did not show different degree of osseointegration, because there was not statistically significant difference among observed parameters (ISQh i ISQp) between implant systems., Uvod/Cilj. Imedijatno opterećenje implantata smatra se jednim od najznačajnijih dostignuća savremene dentalne implantologije. Rezultati novijih kliničkih i eksperimentalnih studija pokazali su da samo implantati visoke primarne stabilnosti mogu biti izloženi protokolu imedijatnog opterećenja zubnom nadoknadom sa predvidivim ishodom. Cilj studije bio je da se ispita mogućnost uspešne primene protokola imedijatnog opterećenja implantata različitog mikrodizajna fiksnim zubnim nadoknadama. Metode. U eksperimentalno istraživanje uključena su dva psa, obezubljena obostrano u premolarnoj regiji gornje i donje vilice. Nakon tri meseca od ekstrakcije zuba, ugrađena su, po predviđenoj šemi, četiri različita implantata po kvadrantu (n = 32): Mk III TiUnite (Nobel Biocare, Sweden), ITI TPS (Straumann, Switzerland), 3I-Osseotite (Implant Innovation, USA) i XiVE Cell-Plus (Friadent, Germany). Implantati su imedijatno opterećeni fiksnim zubnim nadoknadama, četvoročlanim mostovima od plemenite legure zlato-platina, dva dana posle implantacije. Stabilnost implantata i mogućnost imedijatnog opterećenja ocenjivana je na osnovu analize rezonantnih frekvencija (RFA). Rezultati. Šest meseci nakon implantacije i imedijatnog opterećenja fiksnom zubnom nadoknadom, svi mostovi bili su u funkciji i svi implantati uspešno integrisani, ne pokazujući znake mobilnosti. Sumiranjem dobijenih vrednosti koeficijenta stabilnosti implantata (ISQ) ustanovljeno je da su rezonantne frekvencije bile značajno veće kod implantata u donjoj vilici. Rezultati eksperimentalnog istraživanja pokazali su da su sve analizirane površine ostvarile dobru implantatnu stabilnost. Utvrđen je porast ISQ vrednosti kod svih implantata u mandibuli i delimičan pad ISQ vrednosti za implantate u maksili, nakon šest meseci funkcionalnog opterećenja fiksnim zubnim nadoknadama. Zaključak. Ispitivani endoosealni implantati nisu pokazali različit stepen oseointegracije jer se rezultati merenih parametara hirurških (ISQh) i protetkih (ISQp), nisu statistički značajno razlikovali između implantatnih sistema.",
publisher = "Vojnomedicinska akademija - Institut za naučne informacije, Beograd",
journal = "Vojnosanitetski pregled",
title = "Immediate implant loading with fixed dental restorations: An animal model study, Imedijatno opterećenje implantata fiksnim zubnim nadoknadama - studija na psima",
volume = "69",
number = "2",
pages = "181-189",
doi = "10.2298/VSP1202181S"
}
Špadijer-Gostović, A., Todorović, A., Lazić, V., Todorović, A., Milinković, I.,& Leković, V.. (2012). Immediate implant loading with fixed dental restorations: An animal model study. in Vojnosanitetski pregled
Vojnomedicinska akademija - Institut za naučne informacije, Beograd., 69(2), 181-189.
https://doi.org/10.2298/VSP1202181S
Špadijer-Gostović A, Todorović A, Lazić V, Todorović A, Milinković I, Leković V. Immediate implant loading with fixed dental restorations: An animal model study. in Vojnosanitetski pregled. 2012;69(2):181-189.
doi:10.2298/VSP1202181S .
Špadijer-Gostović, Aleksandra, Todorović, Aleksandar, Lazić, Vojkan, Todorović, Ana, Milinković, Iva, Leković, Vojislav, "Immediate implant loading with fixed dental restorations: An animal model study" in Vojnosanitetski pregled, 69, no. 2 (2012):181-189,
https://doi.org/10.2298/VSP1202181S . .
1
1

Aspects of titanium-implant surface modification at the micro and nano levels

Milinković, Iva; Rudolf, Rebeka; Raić, Karlo T.; Aleksić, Zoran; Lazić, Vojkan; Todorović, Aleksandar; Stamenković, Dragoslav

(Institute of Metals and Technology, 2012)

TY  - JOUR
AU  - Milinković, Iva
AU  - Rudolf, Rebeka
AU  - Raić, Karlo T.
AU  - Aleksić, Zoran
AU  - Lazić, Vojkan
AU  - Todorović, Aleksandar
AU  - Stamenković, Dragoslav
PY  - 2012
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1680
AB  - The shape and chemical composition, as well as the macro- and microtopography, of an implant surface have been studied widely as the major factors that positively influence implant osseointegration. Titanium and titanium alloys have been used extensively over the past 20 years as biomedical materials in orthopedic and dental surgery because of their good mechanical properties, corrosion resistance, no cell toxicity, and very poor inflammatory response in pen-implant tissue, which confirms their high biocompatibility. Their favorable biological performance is attributed to a thin native oxide film that forms spontaneously on the titanium surface. It is well established that surface roughness plays an important role in implant fixation. Accordingly, some authors have indicated the existence of an optimal range of surface roughness. The titanium surface can be either chemically or physically modified, or both, in order to improve biomaterial tissue integration. Different treatments are used to modify the titanium surface. Hydroxyapatite coatings, preceded or not by acid etching, are used to create a rough, potentially bioactive surface. Oxide blasting treatments, either with or without chemical etching, are used to develop rough surfaces. Thick oxide films obtained by anodic or thermal oxidation have been used to accelerate the osseointegration process. The ideal microtopography of the surface is still unknown, however, because it is very difficult to associate surface properties with clinical results. As more accurate knowledge is required, several Ti surfaces have been analyzed and the endosseous implant surface modified on the micro level has been thoroughly studied. Additionally, the production of gold (Au) nanoparticles to be added to the micron-scale modified surface has been performed. In this respect, an appropriate overview of our results is given.
PB  - Institute of Metals and Technology
T2  - Materiali in Tehnologije
T1  - Aspects of titanium-implant surface modification at the micro and nano levels
VL  - 46
IS  - 3
SP  - 251
EP  - 256
UR  - https://hdl.handle.net/21.15107/rcub_smile_1680
ER  - 
@article{
author = "Milinković, Iva and Rudolf, Rebeka and Raić, Karlo T. and Aleksić, Zoran and Lazić, Vojkan and Todorović, Aleksandar and Stamenković, Dragoslav",
year = "2012",
abstract = "The shape and chemical composition, as well as the macro- and microtopography, of an implant surface have been studied widely as the major factors that positively influence implant osseointegration. Titanium and titanium alloys have been used extensively over the past 20 years as biomedical materials in orthopedic and dental surgery because of their good mechanical properties, corrosion resistance, no cell toxicity, and very poor inflammatory response in pen-implant tissue, which confirms their high biocompatibility. Their favorable biological performance is attributed to a thin native oxide film that forms spontaneously on the titanium surface. It is well established that surface roughness plays an important role in implant fixation. Accordingly, some authors have indicated the existence of an optimal range of surface roughness. The titanium surface can be either chemically or physically modified, or both, in order to improve biomaterial tissue integration. Different treatments are used to modify the titanium surface. Hydroxyapatite coatings, preceded or not by acid etching, are used to create a rough, potentially bioactive surface. Oxide blasting treatments, either with or without chemical etching, are used to develop rough surfaces. Thick oxide films obtained by anodic or thermal oxidation have been used to accelerate the osseointegration process. The ideal microtopography of the surface is still unknown, however, because it is very difficult to associate surface properties with clinical results. As more accurate knowledge is required, several Ti surfaces have been analyzed and the endosseous implant surface modified on the micro level has been thoroughly studied. Additionally, the production of gold (Au) nanoparticles to be added to the micron-scale modified surface has been performed. In this respect, an appropriate overview of our results is given.",
publisher = "Institute of Metals and Technology",
journal = "Materiali in Tehnologije",
title = "Aspects of titanium-implant surface modification at the micro and nano levels",
volume = "46",
number = "3",
pages = "251-256",
url = "https://hdl.handle.net/21.15107/rcub_smile_1680"
}
Milinković, I., Rudolf, R., Raić, K. T., Aleksić, Z., Lazić, V., Todorović, A.,& Stamenković, D.. (2012). Aspects of titanium-implant surface modification at the micro and nano levels. in Materiali in Tehnologije
Institute of Metals and Technology., 46(3), 251-256.
https://hdl.handle.net/21.15107/rcub_smile_1680
Milinković I, Rudolf R, Raić KT, Aleksić Z, Lazić V, Todorović A, Stamenković D. Aspects of titanium-implant surface modification at the micro and nano levels. in Materiali in Tehnologije. 2012;46(3):251-256.
https://hdl.handle.net/21.15107/rcub_smile_1680 .
Milinković, Iva, Rudolf, Rebeka, Raić, Karlo T., Aleksić, Zoran, Lazić, Vojkan, Todorović, Aleksandar, Stamenković, Dragoslav, "Aspects of titanium-implant surface modification at the micro and nano levels" in Materiali in Tehnologije, 46, no. 3 (2012):251-256,
https://hdl.handle.net/21.15107/rcub_smile_1680 .
7
6

A 1-year prospective cohort study on mandibular overdentures retained by mini dental implants

Šćepanović, Miodrag; Luis Calvo-Guirado, Jose; Marković, Aleksa; Delgado-Ruiz, Rafael; Todorović, Aleksandar; Miličić, Biljana; Mišić, Tijana

(Quintessence Publishing Co., Ltd, 2012)

TY  - JOUR
AU  - Šćepanović, Miodrag
AU  - Luis Calvo-Guirado, Jose
AU  - Marković, Aleksa
AU  - Delgado-Ruiz, Rafael
AU  - Todorović, Aleksandar
AU  - Miličić, Biljana
AU  - Mišić, Tijana
PY  - 2012
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1687
AB  - Aim: The aim of this 1-year prospective cohort study was to evaluate the outcomes and complications of immediately loaded mini dental implants used for stabilizing mandibular overdentures in edentulous patients wearing conventional complete dentures. Materials and methods: Thirty patients received mandibular conventional complete dentures that were subsequently retained by 4 immediately loaded mini dental implants placed in the interforaminal region. Overdenture success, implant success and biological and prosthetic complications were evaluated after the first year of service. Quality of life using the Oral Heath Impact Profile (OHIP)-EDENT test, satisfaction with dental prosthesis and chewing efficiency using questionnaires and a Visual Analogue Scale (VAS) were evaluated twice: after they had received mandibular complete dentures, and again after they had received mandibular overdentures. Results: After 1 year, no overdenture failed and 2 implants did not osseointegrate, resulting in a 98.3% success rate for loaded implants and 95.9% for total implants used (3 out of 123 were not loaded due to fracture). A flap surgical approach was performed in 7 patients, 3 implants fractured during insertion, 3 overdentures fractured, occlusion balancing was necessary for 11 dentures and relining for 8. Implant rehabilitation provided significant improvement in quality of life, stability, comfort, chewing and speaking ability while no significant differences were found in quality of maintenance of hygiene and for aesthetics. Conclusions: Mini dental implant retained overdentures can be a successful therapeutic procedure for treating mandibular edentulism that improves quality of life, patient satisfaction and chewing ability in patients wearing maxillary dentures. Longer follow-ups are needed to validate this therapy in the medium and long-term.
PB  - Quintessence Publishing Co., Ltd
T2  - European Journal of Oral Implantology
T1  - A 1-year prospective cohort study on mandibular overdentures retained by mini dental implants
VL  - 5
IS  - 4
SP  - 367
EP  - 379
UR  - https://hdl.handle.net/21.15107/rcub_smile_1687
ER  - 
@article{
author = "Šćepanović, Miodrag and Luis Calvo-Guirado, Jose and Marković, Aleksa and Delgado-Ruiz, Rafael and Todorović, Aleksandar and Miličić, Biljana and Mišić, Tijana",
year = "2012",
abstract = "Aim: The aim of this 1-year prospective cohort study was to evaluate the outcomes and complications of immediately loaded mini dental implants used for stabilizing mandibular overdentures in edentulous patients wearing conventional complete dentures. Materials and methods: Thirty patients received mandibular conventional complete dentures that were subsequently retained by 4 immediately loaded mini dental implants placed in the interforaminal region. Overdenture success, implant success and biological and prosthetic complications were evaluated after the first year of service. Quality of life using the Oral Heath Impact Profile (OHIP)-EDENT test, satisfaction with dental prosthesis and chewing efficiency using questionnaires and a Visual Analogue Scale (VAS) were evaluated twice: after they had received mandibular complete dentures, and again after they had received mandibular overdentures. Results: After 1 year, no overdenture failed and 2 implants did not osseointegrate, resulting in a 98.3% success rate for loaded implants and 95.9% for total implants used (3 out of 123 were not loaded due to fracture). A flap surgical approach was performed in 7 patients, 3 implants fractured during insertion, 3 overdentures fractured, occlusion balancing was necessary for 11 dentures and relining for 8. Implant rehabilitation provided significant improvement in quality of life, stability, comfort, chewing and speaking ability while no significant differences were found in quality of maintenance of hygiene and for aesthetics. Conclusions: Mini dental implant retained overdentures can be a successful therapeutic procedure for treating mandibular edentulism that improves quality of life, patient satisfaction and chewing ability in patients wearing maxillary dentures. Longer follow-ups are needed to validate this therapy in the medium and long-term.",
publisher = "Quintessence Publishing Co., Ltd",
journal = "European Journal of Oral Implantology",
title = "A 1-year prospective cohort study on mandibular overdentures retained by mini dental implants",
volume = "5",
number = "4",
pages = "367-379",
url = "https://hdl.handle.net/21.15107/rcub_smile_1687"
}
Šćepanović, M., Luis Calvo-Guirado, J., Marković, A., Delgado-Ruiz, R., Todorović, A., Miličić, B.,& Mišić, T.. (2012). A 1-year prospective cohort study on mandibular overdentures retained by mini dental implants. in European Journal of Oral Implantology
Quintessence Publishing Co., Ltd., 5(4), 367-379.
https://hdl.handle.net/21.15107/rcub_smile_1687
Šćepanović M, Luis Calvo-Guirado J, Marković A, Delgado-Ruiz R, Todorović A, Miličić B, Mišić T. A 1-year prospective cohort study on mandibular overdentures retained by mini dental implants. in European Journal of Oral Implantology. 2012;5(4):367-379.
https://hdl.handle.net/21.15107/rcub_smile_1687 .
Šćepanović, Miodrag, Luis Calvo-Guirado, Jose, Marković, Aleksa, Delgado-Ruiz, Rafael, Todorović, Aleksandar, Miličić, Biljana, Mišić, Tijana, "A 1-year prospective cohort study on mandibular overdentures retained by mini dental implants" in European Journal of Oral Implantology, 5, no. 4 (2012):367-379,
https://hdl.handle.net/21.15107/rcub_smile_1687 .
33
33

Stress-strain analysis of an abutment tooth with rest seat prepared in a composite restoration

Tihaček-Šojić, Ljiljana; Milić-Lemić, Aleksandra; Stamenković, Dragoslav; Lazić, Vojkan; Rudolf, Rebeka; Todorović, Aleksandar

(Institute of Metals and Technology, 2011)

TY  - JOUR
AU  - Tihaček-Šojić, Ljiljana
AU  - Milić-Lemić, Aleksandra
AU  - Stamenković, Dragoslav
AU  - Lazić, Vojkan
AU  - Rudolf, Rebeka
AU  - Todorović, Aleksandar
PY  - 2011
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1656
AB  - Placing a composite restoration on abutments for the removable of partial dentures gives favorable aesthetic results with minimal intervention. The objective of this paper is to analyze the stress distribution of a tooth with occlusal rest-seat preparation in the composite and compare it to the biomechanical behavior of an intact tooth, assuming that the stress and strain distribution throughout the intact tooth provides the control scenario. For this finite-element study two different models were designed. The first model was the three-dimensional (3D) model of an intact tooth, and the other one was a 3D model of a tooth with a composite restoration and an appropriate occlusal rest-seat preparation. Load stimulations were performed when the rest was fully seated on its corresponding rest seat and abutment tooth in order to obtain data about the biomechanical behavior of the abutment tooth compared to the intact tooth's stress-distribution pattern. The results of our analyses are presented and analyzed qualitatively. The occlusal loading effect along the sound tooth exhibits a wider high-stress area, localized in correspondence with the occlusal enamel, than the restored teeth. This is due to the rigidity of the enamel. The reduction in the stress values occurs in the composite restoration, which is less rigid. Its lower rigidity allows larger cusp movements. The stress-distribution pattern of the restored tooth with the rest seat showed that introducing an occlusal restoration does not differ from the intact tooth globally, but locally. Our findings indicate that the composite rest-seat restoration absorbs the loading, so reducing the stresses inside the tooth's structure.
PB  - Institute of Metals and Technology
T2  - Materiali in Tehnologije
T1  - Stress-strain analysis of an abutment tooth with rest seat prepared in a composite restoration
VL  - 45
IS  - 6
SP  - 561
EP  - 566
UR  - https://hdl.handle.net/21.15107/rcub_smile_1656
ER  - 
@article{
author = "Tihaček-Šojić, Ljiljana and Milić-Lemić, Aleksandra and Stamenković, Dragoslav and Lazić, Vojkan and Rudolf, Rebeka and Todorović, Aleksandar",
year = "2011",
abstract = "Placing a composite restoration on abutments for the removable of partial dentures gives favorable aesthetic results with minimal intervention. The objective of this paper is to analyze the stress distribution of a tooth with occlusal rest-seat preparation in the composite and compare it to the biomechanical behavior of an intact tooth, assuming that the stress and strain distribution throughout the intact tooth provides the control scenario. For this finite-element study two different models were designed. The first model was the three-dimensional (3D) model of an intact tooth, and the other one was a 3D model of a tooth with a composite restoration and an appropriate occlusal rest-seat preparation. Load stimulations were performed when the rest was fully seated on its corresponding rest seat and abutment tooth in order to obtain data about the biomechanical behavior of the abutment tooth compared to the intact tooth's stress-distribution pattern. The results of our analyses are presented and analyzed qualitatively. The occlusal loading effect along the sound tooth exhibits a wider high-stress area, localized in correspondence with the occlusal enamel, than the restored teeth. This is due to the rigidity of the enamel. The reduction in the stress values occurs in the composite restoration, which is less rigid. Its lower rigidity allows larger cusp movements. The stress-distribution pattern of the restored tooth with the rest seat showed that introducing an occlusal restoration does not differ from the intact tooth globally, but locally. Our findings indicate that the composite rest-seat restoration absorbs the loading, so reducing the stresses inside the tooth's structure.",
publisher = "Institute of Metals and Technology",
journal = "Materiali in Tehnologije",
title = "Stress-strain analysis of an abutment tooth with rest seat prepared in a composite restoration",
volume = "45",
number = "6",
pages = "561-566",
url = "https://hdl.handle.net/21.15107/rcub_smile_1656"
}
Tihaček-Šojić, L., Milić-Lemić, A., Stamenković, D., Lazić, V., Rudolf, R.,& Todorović, A.. (2011). Stress-strain analysis of an abutment tooth with rest seat prepared in a composite restoration. in Materiali in Tehnologije
Institute of Metals and Technology., 45(6), 561-566.
https://hdl.handle.net/21.15107/rcub_smile_1656
Tihaček-Šojić L, Milić-Lemić A, Stamenković D, Lazić V, Rudolf R, Todorović A. Stress-strain analysis of an abutment tooth with rest seat prepared in a composite restoration. in Materiali in Tehnologije. 2011;45(6):561-566.
https://hdl.handle.net/21.15107/rcub_smile_1656 .
Tihaček-Šojić, Ljiljana, Milić-Lemić, Aleksandra, Stamenković, Dragoslav, Lazić, Vojkan, Rudolf, Rebeka, Todorović, Aleksandar, "Stress-strain analysis of an abutment tooth with rest seat prepared in a composite restoration" in Materiali in Tehnologije, 45, no. 6 (2011):561-566,
https://hdl.handle.net/21.15107/rcub_smile_1656 .
1
3

Resonance Frequency Analysis as a Reliable Criterion for Early Loading of Sandblasted/Acid-Etched Active Surface Implants Placed by the Osteotome Sinus Floor Elevation Technique

Marković, Aleksa; Čolić, Snježana; Dražić, Radojica; Gačić, Bojan; Todorović, Aleksandar; Stajčić, Zoran

(2011)

TY  - JOUR
AU  - Marković, Aleksa
AU  - Čolić, Snježana
AU  - Dražić, Radojica
AU  - Gačić, Bojan
AU  - Todorović, Aleksandar
AU  - Stajčić, Zoran
PY  - 2011
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1626
AB  - Purpose: This study was intended to investigate, through resonance frequency analysis (RFA), the stability of implants placed in an early loading protocol via the osteotome sinus floor elevation technique in the posterior maxilla. All implants featured a sandblasted/acid-etched active surface. Materials and Methods: An early loading protocol was considered for patients in whom implants with a sandblasted, large-grit/acid-etched active surface (SLActive) were placed in the posterior maxilla by the osteotome sinus floor elevation technique. Implant stability, which was measured by RFA at surgery and at weekly intervals for the following 6 weeks, was used as the most significant inclusion criterion. At the end of the stability observation period, only implants with a stability quotient of 65 or higher were loaded. Implants were followed for 2 years. Results: Twenty-seven patients received 42 implants, 40 of which were subjected to an early loading protocol 6 weeks after placement. Two years after loading, all 40 implants were surviving, without clinically or radiographically detectible complications. Conclusion: An early loading protocol can be used for SLActive implants placed in the posterior maxilla via the osteotome sinus floor elevation technique if their stability is confirmed by RFA. INT J ORAL MAXILLOFAC IMPLANTS 2011;26:718-724
T2  - International Journal of Oral & Maxillofacial Implants
T1  - Resonance Frequency Analysis as a Reliable Criterion for Early Loading of Sandblasted/Acid-Etched Active Surface Implants Placed by the Osteotome Sinus Floor Elevation Technique
VL  - 26
IS  - 4
SP  - 718
EP  - 724
UR  - https://hdl.handle.net/21.15107/rcub_smile_1626
ER  - 
@article{
author = "Marković, Aleksa and Čolić, Snježana and Dražić, Radojica and Gačić, Bojan and Todorović, Aleksandar and Stajčić, Zoran",
year = "2011",
abstract = "Purpose: This study was intended to investigate, through resonance frequency analysis (RFA), the stability of implants placed in an early loading protocol via the osteotome sinus floor elevation technique in the posterior maxilla. All implants featured a sandblasted/acid-etched active surface. Materials and Methods: An early loading protocol was considered for patients in whom implants with a sandblasted, large-grit/acid-etched active surface (SLActive) were placed in the posterior maxilla by the osteotome sinus floor elevation technique. Implant stability, which was measured by RFA at surgery and at weekly intervals for the following 6 weeks, was used as the most significant inclusion criterion. At the end of the stability observation period, only implants with a stability quotient of 65 or higher were loaded. Implants were followed for 2 years. Results: Twenty-seven patients received 42 implants, 40 of which were subjected to an early loading protocol 6 weeks after placement. Two years after loading, all 40 implants were surviving, without clinically or radiographically detectible complications. Conclusion: An early loading protocol can be used for SLActive implants placed in the posterior maxilla via the osteotome sinus floor elevation technique if their stability is confirmed by RFA. INT J ORAL MAXILLOFAC IMPLANTS 2011;26:718-724",
journal = "International Journal of Oral & Maxillofacial Implants",
title = "Resonance Frequency Analysis as a Reliable Criterion for Early Loading of Sandblasted/Acid-Etched Active Surface Implants Placed by the Osteotome Sinus Floor Elevation Technique",
volume = "26",
number = "4",
pages = "718-724",
url = "https://hdl.handle.net/21.15107/rcub_smile_1626"
}
Marković, A., Čolić, S., Dražić, R., Gačić, B., Todorović, A.,& Stajčić, Z.. (2011). Resonance Frequency Analysis as a Reliable Criterion for Early Loading of Sandblasted/Acid-Etched Active Surface Implants Placed by the Osteotome Sinus Floor Elevation Technique. in International Journal of Oral & Maxillofacial Implants, 26(4), 718-724.
https://hdl.handle.net/21.15107/rcub_smile_1626
Marković A, Čolić S, Dražić R, Gačić B, Todorović A, Stajčić Z. Resonance Frequency Analysis as a Reliable Criterion for Early Loading of Sandblasted/Acid-Etched Active Surface Implants Placed by the Osteotome Sinus Floor Elevation Technique. in International Journal of Oral & Maxillofacial Implants. 2011;26(4):718-724.
https://hdl.handle.net/21.15107/rcub_smile_1626 .
Marković, Aleksa, Čolić, Snježana, Dražić, Radojica, Gačić, Bojan, Todorović, Aleksandar, Stajčić, Zoran, "Resonance Frequency Analysis as a Reliable Criterion for Early Loading of Sandblasted/Acid-Etched Active Surface Implants Placed by the Osteotome Sinus Floor Elevation Technique" in International Journal of Oral & Maxillofacial Implants, 26, no. 4 (2011):718-724,
https://hdl.handle.net/21.15107/rcub_smile_1626 .
10
11

An in vitro study of temperature changes in type 4 bone during implant placement: bone condensing versus bone drilling

Mišić, Tijana; Marković, Aleksa; Todorović, Aleksandar; Čolić, Snježana; Šćepanović, Miodrag; Miličić, Biljana

(Mosby-Elsevier, New York, 2011)

TY  - JOUR
AU  - Mišić, Tijana
AU  - Marković, Aleksa
AU  - Todorović, Aleksandar
AU  - Čolić, Snježana
AU  - Šćepanović, Miodrag
AU  - Miličić, Biljana
PY  - 2011
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1621
AB  - Objective. The aim of this study was to compare changes in temperature of the surrounding bone at various osteotomy depths during implant site preparation by bone condensing and by bone drilling as well as the dynamics of their change. Study design. In the present "in vitro" study, pig ribs with uniform thickness of cortical bone of 2 mm were used. Lateral bone-condensing (experimental group) and bone-drilling techniques (control group) were performed. Temperature changes were recorded at a distance of 0.5 mm from the final test osteotomy by 3 thermocouples at the depths of 1, 5, and 10 mm in tripod configuration. Data were collected from 48 measurements, 24 for each group. Results. Significantly higher mean temperature increase at the depth of 5 mm was observed during bone drilling compared with bone condensing, whereas for the depths of 1 and 10 mm differences were not significant between the 2 surgical techniques. During bone condensing, the mean temperature rise was continuously decreasing with increasing depth of osteotomies, whereas during bone drilling the mean temperature rise was first increased and reached a peak at the depth of 5 mm and then began to decrease with increasing depth of the osteotomies. Conclusions. The bone-condensing technique applied in the jaw bone class D4 offers an advantage over bone drilling because it generates a significantly smaller amount of heat. (Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2011; 112: 28-33)
PB  - Mosby-Elsevier, New York
T2  - Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology & Endodontology
T1  - An in vitro study of temperature changes in type 4 bone during implant placement: bone condensing versus bone drilling
VL  - 112
IS  - 1
SP  - 28
EP  - 33
DO  - 10.1016/j.tripleo.2010.08.010
ER  - 
@article{
author = "Mišić, Tijana and Marković, Aleksa and Todorović, Aleksandar and Čolić, Snježana and Šćepanović, Miodrag and Miličić, Biljana",
year = "2011",
abstract = "Objective. The aim of this study was to compare changes in temperature of the surrounding bone at various osteotomy depths during implant site preparation by bone condensing and by bone drilling as well as the dynamics of their change. Study design. In the present "in vitro" study, pig ribs with uniform thickness of cortical bone of 2 mm were used. Lateral bone-condensing (experimental group) and bone-drilling techniques (control group) were performed. Temperature changes were recorded at a distance of 0.5 mm from the final test osteotomy by 3 thermocouples at the depths of 1, 5, and 10 mm in tripod configuration. Data were collected from 48 measurements, 24 for each group. Results. Significantly higher mean temperature increase at the depth of 5 mm was observed during bone drilling compared with bone condensing, whereas for the depths of 1 and 10 mm differences were not significant between the 2 surgical techniques. During bone condensing, the mean temperature rise was continuously decreasing with increasing depth of osteotomies, whereas during bone drilling the mean temperature rise was first increased and reached a peak at the depth of 5 mm and then began to decrease with increasing depth of the osteotomies. Conclusions. The bone-condensing technique applied in the jaw bone class D4 offers an advantage over bone drilling because it generates a significantly smaller amount of heat. (Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2011; 112: 28-33)",
publisher = "Mosby-Elsevier, New York",
journal = "Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology & Endodontology",
title = "An in vitro study of temperature changes in type 4 bone during implant placement: bone condensing versus bone drilling",
volume = "112",
number = "1",
pages = "28-33",
doi = "10.1016/j.tripleo.2010.08.010"
}
Mišić, T., Marković, A., Todorović, A., Čolić, S., Šćepanović, M.,& Miličić, B.. (2011). An in vitro study of temperature changes in type 4 bone during implant placement: bone condensing versus bone drilling. in Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology & Endodontology
Mosby-Elsevier, New York., 112(1), 28-33.
https://doi.org/10.1016/j.tripleo.2010.08.010
Mišić T, Marković A, Todorović A, Čolić S, Šćepanović M, Miličić B. An in vitro study of temperature changes in type 4 bone during implant placement: bone condensing versus bone drilling. in Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology & Endodontology. 2011;112(1):28-33.
doi:10.1016/j.tripleo.2010.08.010 .
Mišić, Tijana, Marković, Aleksa, Todorović, Aleksandar, Čolić, Snježana, Šćepanović, Miodrag, Miličić, Biljana, "An in vitro study of temperature changes in type 4 bone during implant placement: bone condensing versus bone drilling" in Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology & Endodontology, 112, no. 1 (2011):28-33,
https://doi.org/10.1016/j.tripleo.2010.08.010 . .
25
21
27

Accuracy of ceramic crowns made by optical scanning methods of Cerec®3D system

Todorović, Aleksandar; Trifković, Branka; Stamenković, Dragoslav

(Univerzitet u Nišu - Medicinski fakultet, Niš i Klinika za stomatologiju, Niš, 2010)

TY  - JOUR
AU  - Todorović, Aleksandar
AU  - Trifković, Branka
AU  - Stamenković, Dragoslav
PY  - 2010
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1602
AB  - Introduction: The results of many years technological development of Cerec® 3D CAD/CAM system, is implementation one intraoral and two extraoral optical scanning methods. Aim: The aim of this study was to determine the precision of ceramic crowns made by optical scanning methods of Cerec®3D system. Methods: The study was conducted in three experimental groups of ceramic crowns in whose manufacturing was applied three optical scanning methods of Cerec®3D system. Control group consisted of metalceramic crowns made by conventional methodology. The accuracy of ceramic crowns was examined by measuring of the marginal gap size between edge of crowns and demarcation by scanning electron microscope (SEM). Results: The research found, that there is a difference in the accuracy of ceramic crowns made by Cerec®3D system. The highest level of accuracy was recorded in the group of crowns made by technique extraoral optical superficial scanning (31,64±9,45μ). Marginal gap size crowns made with technique intraoral optical superficial scanning showed a lower level of accuracy (50,27±31,50μ). Value of marginal gap size crowns made by technique extraoral laser point scanning was 102,58+31,23μ. Conclusion: Ceramic crowns made by Cerec®3D optical scanners show a high and clinically acceptable precision level.
AB  - Uvod: Dugogodišnji razvoj Cerec®3D CAD/CAM sistema implementirao je u praktičnu upotrebu jednu intraoralnu i dve ekstraoralne metode optičkog skeniranja. Cilj: Cilj rada je bio da se utvrdi stepen preciznosti keramičkih kruna izrađenih primenom različitih tehnika optičkog skeniranja Cerec®3D sistema. Materijal i metod: Ispitivanje je sprovedeno u okviru tri eksperimentalne grupe kruna u čijoj izradi su primenjeni različiti postupci skeniranja Cerec®3D sistema. Metalokeramičke krune izrađene konvencionalnom metodologijom predstavljale su kontrolnu grupu. Preciznost kruna ispitivana je merenjem veličine marginalnog zjapa između ruba krune i demarkacije preparacije pomoću skenirajućeg elektronskog mikroskopa (SEM). Rezultati: Rezultati istraživanja pokazuju da postoji razlika u preciznosti kruna izrađenih primenom različitih metoda skeniranja Cerec®3D sistema. Najviši stepen preciznosti (31,64±9,45μ) zabeležen je kod kruna u čijoj izradi je primenjena tehnika optičkog ekstraoralnog površinskog skeniranja, nešto niži stepen preciznosti (50,27±31,50μ) imale su krune izrađene tehnikom intraoralnog optičkog površinskog skeniranja. Krune izrađene primenom tehnike ekstraoralnog tačkastog skeniranja imale su stepen preciznosti od 102,58±31,23μ. Zaključak: Krune izrađene primenom optičkih metoda skeniranja Cerec 3D sistema pokazuju visok i klinički prihvatljiv stepen preciznosti.
PB  - Univerzitet u Nišu - Medicinski fakultet, Niš i Klinika za stomatologiju, Niš
T2  - Acta stomatologica Naissi
T1  - Accuracy of ceramic crowns made by optical scanning methods of Cerec®3D system
T1  - Preciznost keramičkih kruna izrađenih primenom optičkih metoda skeniranja Cerec3D sistema
VL  - 26
IS  - 62
SP  - 977
EP  - 986
UR  - https://hdl.handle.net/21.15107/rcub_smile_1602
ER  - 
@article{
author = "Todorović, Aleksandar and Trifković, Branka and Stamenković, Dragoslav",
year = "2010",
abstract = "Introduction: The results of many years technological development of Cerec® 3D CAD/CAM system, is implementation one intraoral and two extraoral optical scanning methods. Aim: The aim of this study was to determine the precision of ceramic crowns made by optical scanning methods of Cerec®3D system. Methods: The study was conducted in three experimental groups of ceramic crowns in whose manufacturing was applied three optical scanning methods of Cerec®3D system. Control group consisted of metalceramic crowns made by conventional methodology. The accuracy of ceramic crowns was examined by measuring of the marginal gap size between edge of crowns and demarcation by scanning electron microscope (SEM). Results: The research found, that there is a difference in the accuracy of ceramic crowns made by Cerec®3D system. The highest level of accuracy was recorded in the group of crowns made by technique extraoral optical superficial scanning (31,64±9,45μ). Marginal gap size crowns made with technique intraoral optical superficial scanning showed a lower level of accuracy (50,27±31,50μ). Value of marginal gap size crowns made by technique extraoral laser point scanning was 102,58+31,23μ. Conclusion: Ceramic crowns made by Cerec®3D optical scanners show a high and clinically acceptable precision level., Uvod: Dugogodišnji razvoj Cerec®3D CAD/CAM sistema implementirao je u praktičnu upotrebu jednu intraoralnu i dve ekstraoralne metode optičkog skeniranja. Cilj: Cilj rada je bio da se utvrdi stepen preciznosti keramičkih kruna izrađenih primenom različitih tehnika optičkog skeniranja Cerec®3D sistema. Materijal i metod: Ispitivanje je sprovedeno u okviru tri eksperimentalne grupe kruna u čijoj izradi su primenjeni različiti postupci skeniranja Cerec®3D sistema. Metalokeramičke krune izrađene konvencionalnom metodologijom predstavljale su kontrolnu grupu. Preciznost kruna ispitivana je merenjem veličine marginalnog zjapa između ruba krune i demarkacije preparacije pomoću skenirajućeg elektronskog mikroskopa (SEM). Rezultati: Rezultati istraživanja pokazuju da postoji razlika u preciznosti kruna izrađenih primenom različitih metoda skeniranja Cerec®3D sistema. Najviši stepen preciznosti (31,64±9,45μ) zabeležen je kod kruna u čijoj izradi je primenjena tehnika optičkog ekstraoralnog površinskog skeniranja, nešto niži stepen preciznosti (50,27±31,50μ) imale su krune izrađene tehnikom intraoralnog optičkog površinskog skeniranja. Krune izrađene primenom tehnike ekstraoralnog tačkastog skeniranja imale su stepen preciznosti od 102,58±31,23μ. Zaključak: Krune izrađene primenom optičkih metoda skeniranja Cerec 3D sistema pokazuju visok i klinički prihvatljiv stepen preciznosti.",
publisher = "Univerzitet u Nišu - Medicinski fakultet, Niš i Klinika za stomatologiju, Niš",
journal = "Acta stomatologica Naissi",
title = "Accuracy of ceramic crowns made by optical scanning methods of Cerec®3D system, Preciznost keramičkih kruna izrađenih primenom optičkih metoda skeniranja Cerec3D sistema",
volume = "26",
number = "62",
pages = "977-986",
url = "https://hdl.handle.net/21.15107/rcub_smile_1602"
}
Todorović, A., Trifković, B.,& Stamenković, D.. (2010). Accuracy of ceramic crowns made by optical scanning methods of Cerec®3D system. in Acta stomatologica Naissi
Univerzitet u Nišu - Medicinski fakultet, Niš i Klinika za stomatologiju, Niš., 26(62), 977-986.
https://hdl.handle.net/21.15107/rcub_smile_1602
Todorović A, Trifković B, Stamenković D. Accuracy of ceramic crowns made by optical scanning methods of Cerec®3D system. in Acta stomatologica Naissi. 2010;26(62):977-986.
https://hdl.handle.net/21.15107/rcub_smile_1602 .
Todorović, Aleksandar, Trifković, Branka, Stamenković, Dragoslav, "Accuracy of ceramic crowns made by optical scanning methods of Cerec®3D system" in Acta stomatologica Naissi, 26, no. 62 (2010):977-986,
https://hdl.handle.net/21.15107/rcub_smile_1602 .
1

Accuracy of porcelain crowns made by using intraoral optical Cerec® 3DCAD/CAM system

Trifković, Branka; Todorović, Aleksandar; Jevremović, Danimir; Puškar, Tatjana; Marković, Dubravka

(Društvo lekara Vojvodine Srpskog lekarskog društva, Novi Sad, 2010)

TY  - JOUR
AU  - Trifković, Branka
AU  - Todorović, Aleksandar
AU  - Jevremović, Danimir
AU  - Puškar, Tatjana
AU  - Marković, Dubravka
PY  - 2010
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1549
AB  - Long term use of intraoral optical scanning methods in the production of fixed dental restorations is one of the recognizable characteristics of Cerec® 3D CAD/CAM system. The aim of this study was to determine the degree of precision of ceramic crowns made by the technique of intraoral optical Cerec®3D scanning system. Material and methods The crowns prepared for the experimental group were scanned by the intraoral optical Cerec® 3D scanning system. In the control group, the porcelain-fused-to-metal crowns were made according to the conventional methodology. The crown accuracy was examined by measuring the size of the marginal gap between the crown and the marginal adaptation zone using the scanning microscope. Discussion The results showed that there was a difference in the accuracy between crowns of the experimental (50.27±31.50 μ) and the control group (132.92±53.21 μ). Conclusion The crowns made using the methods with intraoral optical scanning Cerec 3D system showed a high and clinically acceptable degree of accuracy.
AB  - Dugogodišnja primena metoda intraoralnog optičkog skeniranja u postupku izrade fiksnih zubnih nadoknada jedna je od osobenosti po kojoj je prepoznatljiv sistem Cerec®3D CAD/CAM. Cilj rada je bio da se utvrdi stepen preciznosti keramičkih kruna izrađenih primenom tehnike intraoralnog optičkog skeniranja sistema Cerec®3D. Ispitivanje je sprovedeno u okviru eksperimentalne grupe kruna u čijoj je izradi primenjena tehnika intraoralnog optičkog skeniranja sistema Cerec®3D. Metalokeramičke krune izrađene konvencionalnom metodologijom bile su kontrolna grupa. Preciznost kruna ispitivana je merenjem veličine marginalnog zjapa između ruba krune i demarkacije preparacije pomoću skenirajućeg elektronskog mikroskopa. Rezultati istraživanja pokazuju da postoji razlika u preciznosti kruna eksperimentalne (50,27±31,50μ) i kontrolne grupe (132,92+53,21μ). Krune izrađene primenom metoda intraoralnog optičkog skeniranja sistema Cerec 3D pokazuju visok i klinički prihvatljiv stepen preciznosti.
PB  - Društvo lekara Vojvodine Srpskog lekarskog društva, Novi Sad
T2  - Stomatološki informator
T1  - Accuracy of porcelain crowns made by using intraoral optical Cerec® 3DCAD/CAM system
T1  - Preciznost keramičkih kruna izrađenih primenom metoda intraoralnog optičkog skeniranja sistema Cerec® 3D
VL  - 16
IS  - 26
SP  - 5
EP  - 9
UR  - https://hdl.handle.net/21.15107/rcub_smile_1549
ER  - 
@article{
author = "Trifković, Branka and Todorović, Aleksandar and Jevremović, Danimir and Puškar, Tatjana and Marković, Dubravka",
year = "2010",
abstract = "Long term use of intraoral optical scanning methods in the production of fixed dental restorations is one of the recognizable characteristics of Cerec® 3D CAD/CAM system. The aim of this study was to determine the degree of precision of ceramic crowns made by the technique of intraoral optical Cerec®3D scanning system. Material and methods The crowns prepared for the experimental group were scanned by the intraoral optical Cerec® 3D scanning system. In the control group, the porcelain-fused-to-metal crowns were made according to the conventional methodology. The crown accuracy was examined by measuring the size of the marginal gap between the crown and the marginal adaptation zone using the scanning microscope. Discussion The results showed that there was a difference in the accuracy between crowns of the experimental (50.27±31.50 μ) and the control group (132.92±53.21 μ). Conclusion The crowns made using the methods with intraoral optical scanning Cerec 3D system showed a high and clinically acceptable degree of accuracy., Dugogodišnja primena metoda intraoralnog optičkog skeniranja u postupku izrade fiksnih zubnih nadoknada jedna je od osobenosti po kojoj je prepoznatljiv sistem Cerec®3D CAD/CAM. Cilj rada je bio da se utvrdi stepen preciznosti keramičkih kruna izrađenih primenom tehnike intraoralnog optičkog skeniranja sistema Cerec®3D. Ispitivanje je sprovedeno u okviru eksperimentalne grupe kruna u čijoj je izradi primenjena tehnika intraoralnog optičkog skeniranja sistema Cerec®3D. Metalokeramičke krune izrađene konvencionalnom metodologijom bile su kontrolna grupa. Preciznost kruna ispitivana je merenjem veličine marginalnog zjapa između ruba krune i demarkacije preparacije pomoću skenirajućeg elektronskog mikroskopa. Rezultati istraživanja pokazuju da postoji razlika u preciznosti kruna eksperimentalne (50,27±31,50μ) i kontrolne grupe (132,92+53,21μ). Krune izrađene primenom metoda intraoralnog optičkog skeniranja sistema Cerec 3D pokazuju visok i klinički prihvatljiv stepen preciznosti.",
publisher = "Društvo lekara Vojvodine Srpskog lekarskog društva, Novi Sad",
journal = "Stomatološki informator",
title = "Accuracy of porcelain crowns made by using intraoral optical Cerec® 3DCAD/CAM system, Preciznost keramičkih kruna izrađenih primenom metoda intraoralnog optičkog skeniranja sistema Cerec® 3D",
volume = "16",
number = "26",
pages = "5-9",
url = "https://hdl.handle.net/21.15107/rcub_smile_1549"
}
Trifković, B., Todorović, A., Jevremović, D., Puškar, T.,& Marković, D.. (2010). Accuracy of porcelain crowns made by using intraoral optical Cerec® 3DCAD/CAM system. in Stomatološki informator
Društvo lekara Vojvodine Srpskog lekarskog društva, Novi Sad., 16(26), 5-9.
https://hdl.handle.net/21.15107/rcub_smile_1549
Trifković B, Todorović A, Jevremović D, Puškar T, Marković D. Accuracy of porcelain crowns made by using intraoral optical Cerec® 3DCAD/CAM system. in Stomatološki informator. 2010;16(26):5-9.
https://hdl.handle.net/21.15107/rcub_smile_1549 .
Trifković, Branka, Todorović, Aleksandar, Jevremović, Danimir, Puškar, Tatjana, Marković, Dubravka, "Accuracy of porcelain crowns made by using intraoral optical Cerec® 3DCAD/CAM system" in Stomatološki informator, 16, no. 26 (2010):5-9,
https://hdl.handle.net/21.15107/rcub_smile_1549 .

Possible errors during the optical impression procedure

Todorović, Aleksandar; Lisjak, Dejan; Lazić, Vojkan; Špadijer-Gostović, Aleksandra

(Srpsko lekarsko društvo - Stomatološka sekcija, Beograd, 2010)

TY  - JOUR
AU  - Todorović, Aleksandar
AU  - Lisjak, Dejan
AU  - Lazić, Vojkan
AU  - Špadijer-Gostović, Aleksandra
PY  - 2010
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1524
AB  - Introduction. Modern technologies offer a range of benefits and significantly improve specific therapeutic procedures in dentistry. However, despite gaining experience and training there are still some mistakes in their implementation. The aim of this study was to describe the most common errors during intraoral scanning, 'optical impression' procedure, during CAD-CAM technology for production of dental restorations. Material and Methods. Cerec® 3D CAD-CAM system for one visit tooth reconstruction by inlays, onlays, endocrowns, half and complete crowns and veneers from the ceramic material was used in the study. Results. Analysis included 1564 reconstruction during 5 years. The most common causes of errors performing optical impression were the result of: improper preparation of teeth, the instability of the scanner in the mouth of the patient, incorrect position and angle of the scanner to the object scanning, contrast spray applied in uneven layer, the presence of fluid in the region scan, the presence of artifacts in the region gingival sulcus. Conclusion. Optical impression is faster procedure than conventional impression, but technologically sensitive. The most frequent errors are: improper handling of the scanner, inadequate tooth preparation, irregular powder application on the tooth and irregular use in the gingival sulcus.
AB  - Uvod. Savremene tehnologije u stomatologiji imaju niz prednosti i značajno unapređuju pojedine terapijske postupke. Međutim, i pored sticanja i usavršavanja određenih iskustava, javljaju se greške u njihovoj primeni. Cilj rada je bio da se prikažu najčešće greške prilikom postupka optičkog intraoralnog skeniranja (tzv. otiskivanja) kod CAD-CAM tehnologije izrade zubnih nadoknada. Materijal i metode rada. U radu je korišćen Cerec ® 3D CAD-CAM sistem za jednoseansnu rekonstrukciji zuba izradom inleja, onleja, endokruna, delimičnih i celih kruna, venira, najčešće izrađenih od keramičkih materijala. Rezultati. Analiza je obuhvatila 1.564 restauracije tokom petogodišnjeg rada. Najčešći uzroci grešaka kod optičkog otiskivanja bili su posledica nepravilne preparacije zuba, nestabilnosti skenera u ustima pacijenta, nepravilna pozicija i ugao skenera u odnosu na objekat snimanja, kontrastni sprej nanesen u neravnomernom sloju, zastupljenost tečnosti u regionu skeniranja i artefakta u regionu gingivalnog sulkusa. Zaključak. Optičko intraoralno skeniranje je jednostavniji i brži princip otiskivanja od konvencionalnog postupka, ali je tehnološki osetljiviji. Najčešće greške prilikom optičkog otiskivanja su: nepravilno rukovanje skenerom, neadekvatna priprema zuba, nepravilno nanošenje praha za matiranje površina i nepravilna priprema regiona gingivalnog sulkusa.
PB  - Srpsko lekarsko društvo - Stomatološka sekcija, Beograd
T2  - Stomatološki glasnik Srbije
T1  - Possible errors during the optical impression procedure
T1  - Moguće greške prilikom intraoralnog optičkog otiskivanja
VL  - 57
IS  - 1
SP  - 30
EP  - 37
DO  - 10.2298/SGS1001030T
ER  - 
@article{
author = "Todorović, Aleksandar and Lisjak, Dejan and Lazić, Vojkan and Špadijer-Gostović, Aleksandra",
year = "2010",
abstract = "Introduction. Modern technologies offer a range of benefits and significantly improve specific therapeutic procedures in dentistry. However, despite gaining experience and training there are still some mistakes in their implementation. The aim of this study was to describe the most common errors during intraoral scanning, 'optical impression' procedure, during CAD-CAM technology for production of dental restorations. Material and Methods. Cerec® 3D CAD-CAM system for one visit tooth reconstruction by inlays, onlays, endocrowns, half and complete crowns and veneers from the ceramic material was used in the study. Results. Analysis included 1564 reconstruction during 5 years. The most common causes of errors performing optical impression were the result of: improper preparation of teeth, the instability of the scanner in the mouth of the patient, incorrect position and angle of the scanner to the object scanning, contrast spray applied in uneven layer, the presence of fluid in the region scan, the presence of artifacts in the region gingival sulcus. Conclusion. Optical impression is faster procedure than conventional impression, but technologically sensitive. The most frequent errors are: improper handling of the scanner, inadequate tooth preparation, irregular powder application on the tooth and irregular use in the gingival sulcus., Uvod. Savremene tehnologije u stomatologiji imaju niz prednosti i značajno unapređuju pojedine terapijske postupke. Međutim, i pored sticanja i usavršavanja određenih iskustava, javljaju se greške u njihovoj primeni. Cilj rada je bio da se prikažu najčešće greške prilikom postupka optičkog intraoralnog skeniranja (tzv. otiskivanja) kod CAD-CAM tehnologije izrade zubnih nadoknada. Materijal i metode rada. U radu je korišćen Cerec ® 3D CAD-CAM sistem za jednoseansnu rekonstrukciji zuba izradom inleja, onleja, endokruna, delimičnih i celih kruna, venira, najčešće izrađenih od keramičkih materijala. Rezultati. Analiza je obuhvatila 1.564 restauracije tokom petogodišnjeg rada. Najčešći uzroci grešaka kod optičkog otiskivanja bili su posledica nepravilne preparacije zuba, nestabilnosti skenera u ustima pacijenta, nepravilna pozicija i ugao skenera u odnosu na objekat snimanja, kontrastni sprej nanesen u neravnomernom sloju, zastupljenost tečnosti u regionu skeniranja i artefakta u regionu gingivalnog sulkusa. Zaključak. Optičko intraoralno skeniranje je jednostavniji i brži princip otiskivanja od konvencionalnog postupka, ali je tehnološki osetljiviji. Najčešće greške prilikom optičkog otiskivanja su: nepravilno rukovanje skenerom, neadekvatna priprema zuba, nepravilno nanošenje praha za matiranje površina i nepravilna priprema regiona gingivalnog sulkusa.",
publisher = "Srpsko lekarsko društvo - Stomatološka sekcija, Beograd",
journal = "Stomatološki glasnik Srbije",
title = "Possible errors during the optical impression procedure, Moguće greške prilikom intraoralnog optičkog otiskivanja",
volume = "57",
number = "1",
pages = "30-37",
doi = "10.2298/SGS1001030T"
}
Todorović, A., Lisjak, D., Lazić, V.,& Špadijer-Gostović, A.. (2010). Possible errors during the optical impression procedure. in Stomatološki glasnik Srbije
Srpsko lekarsko društvo - Stomatološka sekcija, Beograd., 57(1), 30-37.
https://doi.org/10.2298/SGS1001030T
Todorović A, Lisjak D, Lazić V, Špadijer-Gostović A. Possible errors during the optical impression procedure. in Stomatološki glasnik Srbije. 2010;57(1):30-37.
doi:10.2298/SGS1001030T .
Todorović, Aleksandar, Lisjak, Dejan, Lazić, Vojkan, Špadijer-Gostović, Aleksandra, "Possible errors during the optical impression procedure" in Stomatološki glasnik Srbije, 57, no. 1 (2010):30-37,
https://doi.org/10.2298/SGS1001030T . .
5

Accuracy of optical scanning methods of the Cerec®3D system in the process of making ceramic inlays

Trifković, Branka; Todorović, Aleksandar; Lazić, Vojkan; Draganjac, Miroslav; Mirković, Nemanja; Jokić, Bojan

(Vojnomedicinska akademija - Institut za naučne informacije, Beograd, 2010)

TY  - JOUR
AU  - Trifković, Branka
AU  - Todorović, Aleksandar
AU  - Lazić, Vojkan
AU  - Draganjac, Miroslav
AU  - Mirković, Nemanja
AU  - Jokić, Bojan
PY  - 2010
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1554
AB  - Background/Aim. One of the results of many years of Cerec® 3D CAD/CAM system technological development is implementation of one intraoral and two extraoral optical scanning methods which, depending on the current indications, are applied in making fixed restorations. The aim of this study was to determine the degree of precision of optical scanning methods by the use of the Cerec®3D CAD/CAM system in the process of making ceramic inlays. Methods. The study was conducted in three experimental groups of inlays prepared using the procedure of three methods of scanning Cerec ®3D system. Ceramic inlays made by conventional methodology were the control group. The accuracy of optical scanning methods of the Cerec®3D system computer aided designcomputer aided manufacturing (CAD/CAM) was indirectly examined by measuring a marginal gap size between inlays and demarcation preparation by scanning electron microscope (SEM). Results. The results of the study showed a difference in the accuracy of the existing methods of scanning dental CAD/CAM systems. The highest level of accuracy was achieved by the extraoral optical superficial scanning technique. The value of marginal gap size inlays made with the technique of extraoral optical superficial scanning was 32.97 ± 13.17 μ. Techniques of intraoral optical superficial and extraoral point laser scanning showed a lower level of accuracy (40.29 ± 21.46 μ for inlays of intraoral optical superficial scanning and 99.67 ± 37.25 μ for inlays of extraoral point laser scanning). Conclusion. Optical scanning methods in dental CAM/CAM technologies are precise methods of digitizing the spatial models; application of extraoral optical scanning methods provides the hightest precision.
AB  - Uvod/Cilj. Jedan od rezultata dugogodišnjeg tehnološkog usavršavanja Cerec®3D sistema jeste implementacija jednog intraoralnog i dva ekstraoralna metoda optičkog skeniranja koji se, u zavisnosti od postojeće indikacije, primenjuju u izradi fiksnih nadoknada. Cilj rada bio je da se utvrdi stepen preciznosti optičkih metoda skeniranja Cerec®3D sistema u postupku izrade keramičkih inleja. Metode. Ispitivanje je sprovedeno u okviru tri eksperimentalne grupe inleja u čijoj izradi su primenjena tri postupka skeniranja Cerec®3D sistema. Keramički inleji izrađeni konvencionalnom metodologijom predstavljali su kontrolnu grupu. Preciznost optičkih metoda skeniranja Cerec®3D sistema ispitivana je indirektno, merenjem veličine rubnog zaptivanja između inleja i demarkacije preparacije pomoću skenirajućeg elektronskog mikroskopa (SEM). Rezultati. Istraživanjem je ustanovljeno da postoji razlika u preciznosti postojećih metoda skeniranja stomatoloških Computer aided design-computer aided manufacturing (CAD/CAM) tehnologija. Najviši stepen preciznosti pokazala je tehnika optičkog ekstraoralnog površinskog skeniranja. Vrednost rubnog zaptivanja inleja izrađenih primenom ove tehnike iznosila je 32,97 ± 13,17 μ. Tehnike intraoralnog optičkog površinskog i ekstraoralnog tačkastog skeniranja pokazuju niži nivo preciznosti (40,29 ± 21,46 μ za inleje intraoralnog optičkog površinskog i 99,67 ± 37,25 μ za inleje ekstraoralnog tačkastog skeniranja). Zaključak. Optičke metode skeniranja u stomatološkim CAD/CAM tehnologijama predstavljaju precizne metode prostorne digitalizacije modela; pri tom, najveću preciznost pruža primena ekstraoralnih optičkih metoda skeniranja.
PB  - Vojnomedicinska akademija - Institut za naučne informacije, Beograd
T2  - Vojnosanitetski pregled
T1  - Accuracy of optical scanning methods of the Cerec®3D system in the process of making ceramic inlays
T1  - Preciznost optičkih metoda skeniranja Cerec®3D sistema u postupku izrade keramičkih inleja
VL  - 67
IS  - 10
SP  - 812
EP  - 818
DO  - 10.2298/VSP1010812T
ER  - 
@article{
author = "Trifković, Branka and Todorović, Aleksandar and Lazić, Vojkan and Draganjac, Miroslav and Mirković, Nemanja and Jokić, Bojan",
year = "2010",
abstract = "Background/Aim. One of the results of many years of Cerec® 3D CAD/CAM system technological development is implementation of one intraoral and two extraoral optical scanning methods which, depending on the current indications, are applied in making fixed restorations. The aim of this study was to determine the degree of precision of optical scanning methods by the use of the Cerec®3D CAD/CAM system in the process of making ceramic inlays. Methods. The study was conducted in three experimental groups of inlays prepared using the procedure of three methods of scanning Cerec ®3D system. Ceramic inlays made by conventional methodology were the control group. The accuracy of optical scanning methods of the Cerec®3D system computer aided designcomputer aided manufacturing (CAD/CAM) was indirectly examined by measuring a marginal gap size between inlays and demarcation preparation by scanning electron microscope (SEM). Results. The results of the study showed a difference in the accuracy of the existing methods of scanning dental CAD/CAM systems. The highest level of accuracy was achieved by the extraoral optical superficial scanning technique. The value of marginal gap size inlays made with the technique of extraoral optical superficial scanning was 32.97 ± 13.17 μ. Techniques of intraoral optical superficial and extraoral point laser scanning showed a lower level of accuracy (40.29 ± 21.46 μ for inlays of intraoral optical superficial scanning and 99.67 ± 37.25 μ for inlays of extraoral point laser scanning). Conclusion. Optical scanning methods in dental CAM/CAM technologies are precise methods of digitizing the spatial models; application of extraoral optical scanning methods provides the hightest precision., Uvod/Cilj. Jedan od rezultata dugogodišnjeg tehnološkog usavršavanja Cerec®3D sistema jeste implementacija jednog intraoralnog i dva ekstraoralna metoda optičkog skeniranja koji se, u zavisnosti od postojeće indikacije, primenjuju u izradi fiksnih nadoknada. Cilj rada bio je da se utvrdi stepen preciznosti optičkih metoda skeniranja Cerec®3D sistema u postupku izrade keramičkih inleja. Metode. Ispitivanje je sprovedeno u okviru tri eksperimentalne grupe inleja u čijoj izradi su primenjena tri postupka skeniranja Cerec®3D sistema. Keramički inleji izrađeni konvencionalnom metodologijom predstavljali su kontrolnu grupu. Preciznost optičkih metoda skeniranja Cerec®3D sistema ispitivana je indirektno, merenjem veličine rubnog zaptivanja između inleja i demarkacije preparacije pomoću skenirajućeg elektronskog mikroskopa (SEM). Rezultati. Istraživanjem je ustanovljeno da postoji razlika u preciznosti postojećih metoda skeniranja stomatoloških Computer aided design-computer aided manufacturing (CAD/CAM) tehnologija. Najviši stepen preciznosti pokazala je tehnika optičkog ekstraoralnog površinskog skeniranja. Vrednost rubnog zaptivanja inleja izrađenih primenom ove tehnike iznosila je 32,97 ± 13,17 μ. Tehnike intraoralnog optičkog površinskog i ekstraoralnog tačkastog skeniranja pokazuju niži nivo preciznosti (40,29 ± 21,46 μ za inleje intraoralnog optičkog površinskog i 99,67 ± 37,25 μ za inleje ekstraoralnog tačkastog skeniranja). Zaključak. Optičke metode skeniranja u stomatološkim CAD/CAM tehnologijama predstavljaju precizne metode prostorne digitalizacije modela; pri tom, najveću preciznost pruža primena ekstraoralnih optičkih metoda skeniranja.",
publisher = "Vojnomedicinska akademija - Institut za naučne informacije, Beograd",
journal = "Vojnosanitetski pregled",
title = "Accuracy of optical scanning methods of the Cerec®3D system in the process of making ceramic inlays, Preciznost optičkih metoda skeniranja Cerec®3D sistema u postupku izrade keramičkih inleja",
volume = "67",
number = "10",
pages = "812-818",
doi = "10.2298/VSP1010812T"
}
Trifković, B., Todorović, A., Lazić, V., Draganjac, M., Mirković, N.,& Jokić, B.. (2010). Accuracy of optical scanning methods of the Cerec®3D system in the process of making ceramic inlays. in Vojnosanitetski pregled
Vojnomedicinska akademija - Institut za naučne informacije, Beograd., 67(10), 812-818.
https://doi.org/10.2298/VSP1010812T
Trifković B, Todorović A, Lazić V, Draganjac M, Mirković N, Jokić B. Accuracy of optical scanning methods of the Cerec®3D system in the process of making ceramic inlays. in Vojnosanitetski pregled. 2010;67(10):812-818.
doi:10.2298/VSP1010812T .
Trifković, Branka, Todorović, Aleksandar, Lazić, Vojkan, Draganjac, Miroslav, Mirković, Nemanja, Jokić, Bojan, "Accuracy of optical scanning methods of the Cerec®3D system in the process of making ceramic inlays" in Vojnosanitetski pregled, 67, no. 10 (2010):812-818,
https://doi.org/10.2298/VSP1010812T . .
4
1
2

Comparative analysis of unilateral removable partial denture and classical removable partial denture by using finite element method

Radović, Katarina; Čairović, Aleksandra; Todorović, Aleksandar; Stančić, Ivica; Grbović, Aleksandar

(Srpsko lekarsko društvo, Beograd, 2010)

TY  - JOUR
AU  - Radović, Katarina
AU  - Čairović, Aleksandra
AU  - Todorović, Aleksandar
AU  - Stančić, Ivica
AU  - Grbović, Aleksandar
PY  - 2010
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1568
AB  - Introduction. Various mobile devices are used in the therapy of unilateral free-end saddle. Unilateral dentures with precise connectivity elements are not used frequently. In this paper the problem of applying and functionality of unilateral freeend saddle denture without major connector was taken into consideration. Objective. The aim was to analyze and compare a unilateral RPD (removable partial denture) and a classical RPD by calculating and analyzing stresses under different loads. Methods. 3D models of unilateral removable partial denture and classical removable partial denture with casted clasps were made by using computer program CATIA V5 (abutment teeth, canine and first premolar, with crowns and abutment tissues were also made). The models were built in full-scale. Stress analyses for both models were performed by applying a force of 300 N on the second premolar, a force of 500 N on the first molar and a force of 700 N on the second molar. Results. The Fault Model Extractor (FME) analysis and calculation showed the complete behavior of unilateral removable partial denture and abutments (canine and first premolar), as well as the behavior of RPD under identical loading conditions. Applied forces with extreme values caused high stress levels on both models and their abutments within physiological limits. Conclusion. Having analyzed stresses under same conditions, we concluded that the unilateral RPD and classical RPD have similar physiological values.
AB  - Uvod. U lečenju jednostrane krezubosti koriste se različiti oblici mobilnih nadoknada. Jednostrane kompleksne proteze sa preciznim veznim elementima nisu često u upotrebi. Radi rasvetljenja problema jednostrano slobodnog sedla i primene proteze koja ne poseduje veliku spojnicu, u ovom radu je prikazano istraživanje funkcionalnosti ove manje poznate nadoknade. Cilj rada. Cilj rada je bio da se ispitaju i uporede dobijeni naponi jednostrane kompleksne i konvencionalne parcijalne skeletirane proteze pod opterećenjem. Metode rada. U kompjuterskom programu CATIA V5 napravljeni su trodimenzionalni modeli jednostrane kompleksne proteze s odgovarajućim potpornim strukturama (retencioni zubi - očnjak i prvi premolar s namenskim krunicama, alveole i parodontalni prostor) i klasične skeletirane proteze s livenim kukicama. Radi validnosti dobijenih rezultata, modeliranje je obavljeno u prirodnoj veličini. Primenom metode konačnih elemenata izvršena je komparativna analiza vrednosti dobijenih napona pri opterećenju silama od 300 N u predelu drugog premolara, 500 N u predelu prvog molara i 700 N u predelu drugog molara. Rezultati. Proračun je dao sliku ponašanja celog modela jednostrane kompleksne parcijalne proteze s retencionim zubima i sliku celog modela klasične skeletirane parcijalne proteze koje su predstavljene u obliku napona pri različitim uslovima opterećenja. Uneta opterećenja izazvala su visok nivo napona na modelu i zubima nosačima, ali u granicama fiziološke podnošljivosti. Zaključak. Naponi na potpornim strukturama jednostrane kompleksne proteze koji su nastali usled dejstva primenjenih sila bili su u podnošljivim fiziološkim granicama. U uslovima istog opterećenja primenom metode konačnih elemenata dobijaju se veoma slične vrednosti napona jednostrane kompleksne proteze i konvencionalne skeletirane proteze.
PB  - Srpsko lekarsko društvo, Beograd
T2  - Srpski arhiv za celokupno lekarstvo
T1  - Comparative analysis of unilateral removable partial denture and classical removable partial denture by using finite element method
T1  - Komparativna analiza jednostrane i konvencionalne skeletirane proteze primenom metode konačnih elemenata
VL  - 138
IS  - 11-12
SP  - 706
EP  - 713
DO  - 10.2298/SARH1012706R
ER  - 
@article{
author = "Radović, Katarina and Čairović, Aleksandra and Todorović, Aleksandar and Stančić, Ivica and Grbović, Aleksandar",
year = "2010",
abstract = "Introduction. Various mobile devices are used in the therapy of unilateral free-end saddle. Unilateral dentures with precise connectivity elements are not used frequently. In this paper the problem of applying and functionality of unilateral freeend saddle denture without major connector was taken into consideration. Objective. The aim was to analyze and compare a unilateral RPD (removable partial denture) and a classical RPD by calculating and analyzing stresses under different loads. Methods. 3D models of unilateral removable partial denture and classical removable partial denture with casted clasps were made by using computer program CATIA V5 (abutment teeth, canine and first premolar, with crowns and abutment tissues were also made). The models were built in full-scale. Stress analyses for both models were performed by applying a force of 300 N on the second premolar, a force of 500 N on the first molar and a force of 700 N on the second molar. Results. The Fault Model Extractor (FME) analysis and calculation showed the complete behavior of unilateral removable partial denture and abutments (canine and first premolar), as well as the behavior of RPD under identical loading conditions. Applied forces with extreme values caused high stress levels on both models and their abutments within physiological limits. Conclusion. Having analyzed stresses under same conditions, we concluded that the unilateral RPD and classical RPD have similar physiological values., Uvod. U lečenju jednostrane krezubosti koriste se različiti oblici mobilnih nadoknada. Jednostrane kompleksne proteze sa preciznim veznim elementima nisu često u upotrebi. Radi rasvetljenja problema jednostrano slobodnog sedla i primene proteze koja ne poseduje veliku spojnicu, u ovom radu je prikazano istraživanje funkcionalnosti ove manje poznate nadoknade. Cilj rada. Cilj rada je bio da se ispitaju i uporede dobijeni naponi jednostrane kompleksne i konvencionalne parcijalne skeletirane proteze pod opterećenjem. Metode rada. U kompjuterskom programu CATIA V5 napravljeni su trodimenzionalni modeli jednostrane kompleksne proteze s odgovarajućim potpornim strukturama (retencioni zubi - očnjak i prvi premolar s namenskim krunicama, alveole i parodontalni prostor) i klasične skeletirane proteze s livenim kukicama. Radi validnosti dobijenih rezultata, modeliranje je obavljeno u prirodnoj veličini. Primenom metode konačnih elemenata izvršena je komparativna analiza vrednosti dobijenih napona pri opterećenju silama od 300 N u predelu drugog premolara, 500 N u predelu prvog molara i 700 N u predelu drugog molara. Rezultati. Proračun je dao sliku ponašanja celog modela jednostrane kompleksne parcijalne proteze s retencionim zubima i sliku celog modela klasične skeletirane parcijalne proteze koje su predstavljene u obliku napona pri različitim uslovima opterećenja. Uneta opterećenja izazvala su visok nivo napona na modelu i zubima nosačima, ali u granicama fiziološke podnošljivosti. Zaključak. Naponi na potpornim strukturama jednostrane kompleksne proteze koji su nastali usled dejstva primenjenih sila bili su u podnošljivim fiziološkim granicama. U uslovima istog opterećenja primenom metode konačnih elemenata dobijaju se veoma slične vrednosti napona jednostrane kompleksne proteze i konvencionalne skeletirane proteze.",
publisher = "Srpsko lekarsko društvo, Beograd",
journal = "Srpski arhiv za celokupno lekarstvo",
title = "Comparative analysis of unilateral removable partial denture and classical removable partial denture by using finite element method, Komparativna analiza jednostrane i konvencionalne skeletirane proteze primenom metode konačnih elemenata",
volume = "138",
number = "11-12",
pages = "706-713",
doi = "10.2298/SARH1012706R"
}
Radović, K., Čairović, A., Todorović, A., Stančić, I.,& Grbović, A.. (2010). Comparative analysis of unilateral removable partial denture and classical removable partial denture by using finite element method. in Srpski arhiv za celokupno lekarstvo
Srpsko lekarsko društvo, Beograd., 138(11-12), 706-713.
https://doi.org/10.2298/SARH1012706R
Radović K, Čairović A, Todorović A, Stančić I, Grbović A. Comparative analysis of unilateral removable partial denture and classical removable partial denture by using finite element method. in Srpski arhiv za celokupno lekarstvo. 2010;138(11-12):706-713.
doi:10.2298/SARH1012706R .
Radović, Katarina, Čairović, Aleksandra, Todorović, Aleksandar, Stančić, Ivica, Grbović, Aleksandar, "Comparative analysis of unilateral removable partial denture and classical removable partial denture by using finite element method" in Srpski arhiv za celokupno lekarstvo, 138, no. 11-12 (2010):706-713,
https://doi.org/10.2298/SARH1012706R . .
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5
6

Nanofoils for soldering and brazing in dental joining practice and jewellery manufacturing

Raić, Karlo T.; Rudolf, Rebeka; Kosec, Borut; Anžel, Ivan; Lazić, Vojkan; Todorović, Aleksandar

(Institute of Metals and Technology, 2010)

TY  - JOUR
AU  - Raić, Karlo T.
AU  - Rudolf, Rebeka
AU  - Kosec, Borut
AU  - Anžel, Ivan
AU  - Lazić, Vojkan
AU  - Todorović, Aleksandar
PY  - 2010
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1560
AB  - This paper describes the development of novel, reactive Al-Au nano-multilayered foils, their possible application in different fields and a discussion of the nano-foils' suitability for dental and jewellery applications. Moreover, this study includes the rapid joining of similar and dissimilar materials, by placing multilayer nano-foils and two layers of solder or braze. The foils precisely control the instantaneous release of heat energy for the joining and act as a controllable local heat source. The reactive foils' thickness is in the range 10 nm to less than 100 nm and they contain many nanoscale layers that alternate between materials with high mixing heats, such as Al and Au. The foil between the two solder/braze layers melts the solder/braze with the heat generated by the reaction and bonds the components. The use of reactive foils eliminates the need for a furnace and dramatically increases the soldering/brazing heating rate of the components being bonded. Thus, ceramics and metals can be fused over required areas without the thermal stresses that are encountered in furnace soldering or brazing. In addition, a completely new plasma technology is proposed for the manufacturing of nano-foils and the first results of the preliminary experimental testing are presented.
PB  - Institute of Metals and Technology
T2  - Materiali in Tehnologije
T1  - Nanofoils for soldering and brazing in dental joining practice and jewellery manufacturing
VL  - 43
IS  - 1
SP  - 3
EP  - 9
UR  - https://hdl.handle.net/21.15107/rcub_smile_1560
ER  - 
@article{
author = "Raić, Karlo T. and Rudolf, Rebeka and Kosec, Borut and Anžel, Ivan and Lazić, Vojkan and Todorović, Aleksandar",
year = "2010",
abstract = "This paper describes the development of novel, reactive Al-Au nano-multilayered foils, their possible application in different fields and a discussion of the nano-foils' suitability for dental and jewellery applications. Moreover, this study includes the rapid joining of similar and dissimilar materials, by placing multilayer nano-foils and two layers of solder or braze. The foils precisely control the instantaneous release of heat energy for the joining and act as a controllable local heat source. The reactive foils' thickness is in the range 10 nm to less than 100 nm and they contain many nanoscale layers that alternate between materials with high mixing heats, such as Al and Au. The foil between the two solder/braze layers melts the solder/braze with the heat generated by the reaction and bonds the components. The use of reactive foils eliminates the need for a furnace and dramatically increases the soldering/brazing heating rate of the components being bonded. Thus, ceramics and metals can be fused over required areas without the thermal stresses that are encountered in furnace soldering or brazing. In addition, a completely new plasma technology is proposed for the manufacturing of nano-foils and the first results of the preliminary experimental testing are presented.",
publisher = "Institute of Metals and Technology",
journal = "Materiali in Tehnologije",
title = "Nanofoils for soldering and brazing in dental joining practice and jewellery manufacturing",
volume = "43",
number = "1",
pages = "3-9",
url = "https://hdl.handle.net/21.15107/rcub_smile_1560"
}
Raić, K. T., Rudolf, R., Kosec, B., Anžel, I., Lazić, V.,& Todorović, A.. (2010). Nanofoils for soldering and brazing in dental joining practice and jewellery manufacturing. in Materiali in Tehnologije
Institute of Metals and Technology., 43(1), 3-9.
https://hdl.handle.net/21.15107/rcub_smile_1560
Raić KT, Rudolf R, Kosec B, Anžel I, Lazić V, Todorović A. Nanofoils for soldering and brazing in dental joining practice and jewellery manufacturing. in Materiali in Tehnologije. 2010;43(1):3-9.
https://hdl.handle.net/21.15107/rcub_smile_1560 .
Raić, Karlo T., Rudolf, Rebeka, Kosec, Borut, Anžel, Ivan, Lazić, Vojkan, Todorović, Aleksandar, "Nanofoils for soldering and brazing in dental joining practice and jewellery manufacturing" in Materiali in Tehnologije, 43, no. 1 (2010):3-9,
https://hdl.handle.net/21.15107/rcub_smile_1560 .
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