TY  - JOUR
AU  - Popovac, Aleksandra
AU  - Mladenović, Irena
AU  - Krunić, Jelena
AU  - Trifković, Branka
AU  - Todorović, Ana
AU  - Milašin, Jelena
AU  - Despotović, Nebojša
AU  - Stančić, Ivica
PY  - 2020
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2517
AB  - Compromised dentition has been suggested to pose a significant risk factor for dementia. It was mainly investigated through insufficient tooth number, disregarding contact between opposing teeth (dental occlusion). The epsilon 4 allele of apolipoprotein (APOE4) is the primary genetic marker for the late onset of Alzheimer's disease (AD). However, APOE4 and dental occlusion have not yet been investigated as possible associated risk factors for AD. The study was aimed to examine the impact of dental status and different APOE gene variants on AD occurrence. Secondly, sociodemographic variables were investigated as factors potentially associated with AD. The case-control study included two groups: 116 patients with AD (according to the NINDS-ADRDA criteria) and 63 controls (Mini-Mental State Examination scores >= 24). The analysis of APOE gene polymorphism was conducted through PCR reaction. Dental examination included recording of number of teeth, presence of fixed or removable dentures, and number of functional tooth units (FTU). Regression analysis was used to investigate the joint effect of the clinical and genetic variables on AD. Results showed that patients with AD were more often carriers of epsilon 3/epsilon 4 genotype and epsilon 4 allele, had lower number of teeth and FTU, and were less likely to be married, live in home, and had less chronic diseases, compared to the controls. Regression analysis showed that presence of APOE4 allele and the number of total FTU remained associated with AD, even when adjusted for age, sex, and level of education. In conclusion, deficient dental occlusion and presence of APOE4 may independently increase risk for AD.
PB  - Ios Press, Amsterdam
T2  - Journal of Alzheimers Disease
T1  - Apolipoprotein epsilon 4 Allele and Dental Occlusion Deficiency as Risk Factors for Alzheimer's Disease
VL  - 74
IS  - 3
SP  - 797
EP  - 802
DO  - 10.3233/JAD-191283
ER  - 

@article{
author = "Popovac, Aleksandra and Mladenović, Irena and Krunić, Jelena and Trifković, Branka and Todorović, Ana and Milašin, Jelena and Despotović, Nebojša and Stančić, Ivica",
year = "2020",
abstract = "Compromised dentition has been suggested to pose a significant risk factor for dementia. It was mainly investigated through insufficient tooth number, disregarding contact between opposing teeth (dental occlusion). The epsilon 4 allele of apolipoprotein (APOE4) is the primary genetic marker for the late onset of Alzheimer's disease (AD). However, APOE4 and dental occlusion have not yet been investigated as possible associated risk factors for AD. The study was aimed to examine the impact of dental status and different APOE gene variants on AD occurrence. Secondly, sociodemographic variables were investigated as factors potentially associated with AD. The case-control study included two groups: 116 patients with AD (according to the NINDS-ADRDA criteria) and 63 controls (Mini-Mental State Examination scores >= 24). The analysis of APOE gene polymorphism was conducted through PCR reaction. Dental examination included recording of number of teeth, presence of fixed or removable dentures, and number of functional tooth units (FTU). Regression analysis was used to investigate the joint effect of the clinical and genetic variables on AD. Results showed that patients with AD were more often carriers of epsilon 3/epsilon 4 genotype and epsilon 4 allele, had lower number of teeth and FTU, and were less likely to be married, live in home, and had less chronic diseases, compared to the controls. Regression analysis showed that presence of APOE4 allele and the number of total FTU remained associated with AD, even when adjusted for age, sex, and level of education. In conclusion, deficient dental occlusion and presence of APOE4 may independently increase risk for AD.",
publisher = "Ios Press, Amsterdam",
journal = "Journal of Alzheimers Disease",
title = "Apolipoprotein epsilon 4 Allele and Dental Occlusion Deficiency as Risk Factors for Alzheimer's Disease",
volume = "74",
number = "3",
pages = "797-802",
doi = "10.3233/JAD-191283"
}

Popovac, A., Mladenović, I., Krunić, J., Trifković, B., Todorović, A., Milašin, J., Despotović, N.,& Stančić, I.. (2020). Apolipoprotein epsilon 4 Allele and Dental Occlusion Deficiency as Risk Factors for Alzheimer's Disease. in Journal of Alzheimers Disease
Ios Press, Amsterdam., 74(3), 797-802.
https://doi.org/10.3233/JAD-191283

Popovac A, Mladenović I, Krunić J, Trifković B, Todorović A, Milašin J, Despotović N, Stančić I. Apolipoprotein epsilon 4 Allele and Dental Occlusion Deficiency as Risk Factors for Alzheimer's Disease. in Journal of Alzheimers Disease. 2020;74(3):797-802.
doi:10.3233/JAD-191283 .

Popovac, Aleksandra, Mladenović, Irena, Krunić, Jelena, Trifković, Branka, Todorović, Ana, Milašin, Jelena, Despotović, Nebojša, Stančić, Ivica, "Apolipoprotein epsilon 4 Allele and Dental Occlusion Deficiency as Risk Factors for Alzheimer's Disease" in Journal of Alzheimers Disease, 74, no. 3 (2020):797-802,
https://doi.org/10.3233/JAD-191283 . .

TY  - JOUR
AU  - Marjanović, Jovana
AU  - Veljović, Đorđe
AU  - Stasić, Jovana
AU  - Savić-Stanković, Tatjana
AU  - Trifković, Branka
AU  - Miletić, Vesna
PY  - 2018
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2536
AB  - Objectives. To evaluate optical properties (color and translucency) of 'sandwich' restorations of resin-based composites and esthetically unfavorable dentin restoratives. Methods. Cylindrical 'dentin' specimens (8 mm in diameter and 2 mm thick, N = 5/group) were prepared using EverX Posterior (GC), Biodentine (Septodont), experimental hydroxyapatite (HAP) or conventional composites (Gradia Direct Posterior, GC; Filtek Z250 and Filtek Z500, 3M ESPE). Capping 'enamel' layers were prepared using composites (Gradia Direct Posterior, Filtek Z250 or Z550) of Al or A3 shade and the following thickness: 0.6, 1 or 2 mm. Color (Delta E) and translucency parameter (TP) were determined using a spectrophotometer (VITA Easyshade Advance 4.0, VITA Zahnfabrik). Data were statistically analyzed using analysis of variance with Tukey's post-hoc tests (alpha = 0.05). Results. TP was greatly affected by layer thickness, whilst Delta E depended on shade and layer thickness of the capping composite. HAP and Biodentine showed significantly lower TP and higher Delta E (deviation from 'ideal white') than composites (p  lt  0.05). Greater TP was seen in EverX_composite groups than in corresponding control groups of the same shade and thickness. TP of composites combined with Biodentine or HAP was below 2, lower than the corresponding control groups (p  lt  0.05). Within-group differences of Delta E were greatest in HAP_composite groups. EverX_Gradia and EverX_FiltekZ250 combinations showed the most comparable Delta E with the control groups. Significance. A 2 mm thick layer of composite covering dentin restoratives with unfavorable esthetics is recommended for a final 'sandwich' restoration that is esthetically comparable to a conventional, mono-composite control restoration.
PB  - Elsevier Sci Ltd, Oxford
T2  - Dental Materials
T1  - Optical properties of composite restorations influenced by dissimilar dentin restoratives
VL  - 34
IS  - 5
SP  - 737
EP  - 745
DO  - 10.1016/j.dental.2018.01.017
ER  - 

@article{
author = "Marjanović, Jovana and Veljović, Đorđe and Stasić, Jovana and Savić-Stanković, Tatjana and Trifković, Branka and Miletić, Vesna",
year = "2018",
abstract = "Objectives. To evaluate optical properties (color and translucency) of 'sandwich' restorations of resin-based composites and esthetically unfavorable dentin restoratives. Methods. Cylindrical 'dentin' specimens (8 mm in diameter and 2 mm thick, N = 5/group) were prepared using EverX Posterior (GC), Biodentine (Septodont), experimental hydroxyapatite (HAP) or conventional composites (Gradia Direct Posterior, GC; Filtek Z250 and Filtek Z500, 3M ESPE). Capping 'enamel' layers were prepared using composites (Gradia Direct Posterior, Filtek Z250 or Z550) of Al or A3 shade and the following thickness: 0.6, 1 or 2 mm. Color (Delta E) and translucency parameter (TP) were determined using a spectrophotometer (VITA Easyshade Advance 4.0, VITA Zahnfabrik). Data were statistically analyzed using analysis of variance with Tukey's post-hoc tests (alpha = 0.05). Results. TP was greatly affected by layer thickness, whilst Delta E depended on shade and layer thickness of the capping composite. HAP and Biodentine showed significantly lower TP and higher Delta E (deviation from 'ideal white') than composites (p  lt  0.05). Greater TP was seen in EverX_composite groups than in corresponding control groups of the same shade and thickness. TP of composites combined with Biodentine or HAP was below 2, lower than the corresponding control groups (p  lt  0.05). Within-group differences of Delta E were greatest in HAP_composite groups. EverX_Gradia and EverX_FiltekZ250 combinations showed the most comparable Delta E with the control groups. Significance. A 2 mm thick layer of composite covering dentin restoratives with unfavorable esthetics is recommended for a final 'sandwich' restoration that is esthetically comparable to a conventional, mono-composite control restoration.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Dental Materials",
title = "Optical properties of composite restorations influenced by dissimilar dentin restoratives",
volume = "34",
number = "5",
pages = "737-745",
doi = "10.1016/j.dental.2018.01.017"
}

Marjanović, J., Veljović, Đ., Stasić, J., Savić-Stanković, T., Trifković, B.,& Miletić, V.. (2018). Optical properties of composite restorations influenced by dissimilar dentin restoratives. in Dental Materials
Elsevier Sci Ltd, Oxford., 34(5), 737-745.
https://doi.org/10.1016/j.dental.2018.01.017

Marjanović J, Veljović Đ, Stasić J, Savić-Stanković T, Trifković B, Miletić V. Optical properties of composite restorations influenced by dissimilar dentin restoratives. in Dental Materials. 2018;34(5):737-745.
doi:10.1016/j.dental.2018.01.017 .

Marjanović, Jovana, Veljović, Đorđe, Stasić, Jovana, Savić-Stanković, Tatjana, Trifković, Branka, Miletić, Vesna, "Optical properties of composite restorations influenced by dissimilar dentin restoratives" in Dental Materials, 34, no. 5 (2018):737-745,
https://doi.org/10.1016/j.dental.2018.01.017 . .

TY  - JOUR
AU  - Marjanović, Jovana
AU  - Veljović, Đorđe
AU  - Stasić, Jovana
AU  - Savić-Stanković, Tatjana
AU  - Trifković, Branka
AU  - Miletić, Vesna
PY  - 2018
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2290
AB  - Objectives. To evaluate optical properties (color and translucency) of 'sandwich' restorations of resin-based composites and esthetically unfavorable dentin restoratives. Methods. Cylindrical 'dentin' specimens (8 mm in diameter and 2 mm thick, N = 5/group) were prepared using EverX Posterior (GC), Biodentine (Septodont), experimental hydroxyapatite (HAP) or conventional composites (Gradia Direct Posterior, GC; Filtek Z250 and Filtek Z500, 3M ESPE). Capping 'enamel' layers were prepared using composites (Gradia Direct Posterior, Filtek Z250 or Z550) of Al or A3 shade and the following thickness: 0.6, 1 or 2 mm. Color (Delta E) and translucency parameter (TP) were determined using a spectrophotometer (VITA Easyshade Advance 4.0, VITA Zahnfabrik). Data were statistically analyzed using analysis of variance with Tukey's post-hoc tests (alpha = 0.05). Results. TP was greatly affected by layer thickness, whilst Delta E depended on shade and layer thickness of the capping composite. HAP and Biodentine showed significantly lower TP and higher Delta E (deviation from 'ideal white') than composites (p  lt  0.05). Greater TP was seen in EverX_composite groups than in corresponding control groups of the same shade and thickness. TP of composites combined with Biodentine or HAP was below 2, lower than the corresponding control groups (p  lt  0.05). Within-group differences of Delta E were greatest in HAP_composite groups. EverX_Gradia and EverX_FiltekZ250 combinations showed the most comparable Delta E with the control groups. Significance. A 2 mm thick layer of composite covering dentin restoratives with unfavorable esthetics is recommended for a final 'sandwich' restoration that is esthetically comparable to a conventional, mono-composite control restoration.
PB  - Elsevier Sci Ltd, Oxford
T2  - Dental Materials
T1  - Optical properties of composite restorations influenced by dissimilar dentin restoratives
VL  - 34
IS  - 5
SP  - 737
EP  - 745
DO  - 10.1016/j.dental.2018.01.017
ER  - 

@article{
author = "Marjanović, Jovana and Veljović, Đorđe and Stasić, Jovana and Savić-Stanković, Tatjana and Trifković, Branka and Miletić, Vesna",
year = "2018",
abstract = "Objectives. To evaluate optical properties (color and translucency) of 'sandwich' restorations of resin-based composites and esthetically unfavorable dentin restoratives. Methods. Cylindrical 'dentin' specimens (8 mm in diameter and 2 mm thick, N = 5/group) were prepared using EverX Posterior (GC), Biodentine (Septodont), experimental hydroxyapatite (HAP) or conventional composites (Gradia Direct Posterior, GC; Filtek Z250 and Filtek Z500, 3M ESPE). Capping 'enamel' layers were prepared using composites (Gradia Direct Posterior, Filtek Z250 or Z550) of Al or A3 shade and the following thickness: 0.6, 1 or 2 mm. Color (Delta E) and translucency parameter (TP) were determined using a spectrophotometer (VITA Easyshade Advance 4.0, VITA Zahnfabrik). Data were statistically analyzed using analysis of variance with Tukey's post-hoc tests (alpha = 0.05). Results. TP was greatly affected by layer thickness, whilst Delta E depended on shade and layer thickness of the capping composite. HAP and Biodentine showed significantly lower TP and higher Delta E (deviation from 'ideal white') than composites (p  lt  0.05). Greater TP was seen in EverX_composite groups than in corresponding control groups of the same shade and thickness. TP of composites combined with Biodentine or HAP was below 2, lower than the corresponding control groups (p  lt  0.05). Within-group differences of Delta E were greatest in HAP_composite groups. EverX_Gradia and EverX_FiltekZ250 combinations showed the most comparable Delta E with the control groups. Significance. A 2 mm thick layer of composite covering dentin restoratives with unfavorable esthetics is recommended for a final 'sandwich' restoration that is esthetically comparable to a conventional, mono-composite control restoration.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Dental Materials",
title = "Optical properties of composite restorations influenced by dissimilar dentin restoratives",
volume = "34",
number = "5",
pages = "737-745",
doi = "10.1016/j.dental.2018.01.017"
}

Marjanović, J., Veljović, Đ., Stasić, J., Savić-Stanković, T., Trifković, B.,& Miletić, V.. (2018). Optical properties of composite restorations influenced by dissimilar dentin restoratives. in Dental Materials
Elsevier Sci Ltd, Oxford., 34(5), 737-745.
https://doi.org/10.1016/j.dental.2018.01.017

Marjanović J, Veljović Đ, Stasić J, Savić-Stanković T, Trifković B, Miletić V. Optical properties of composite restorations influenced by dissimilar dentin restoratives. in Dental Materials. 2018;34(5):737-745.
doi:10.1016/j.dental.2018.01.017 .

Marjanović, Jovana, Veljović, Đorđe, Stasić, Jovana, Savić-Stanković, Tatjana, Trifković, Branka, Miletić, Vesna, "Optical properties of composite restorations influenced by dissimilar dentin restoratives" in Dental Materials, 34, no. 5 (2018):737-745,
https://doi.org/10.1016/j.dental.2018.01.017 . .

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 .

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 . .

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 . .

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 .

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 . .

TY  - JOUR
AU  - Mirković, Nemanja
AU  - Špadijer-Gostović, Aleksandra
AU  - Lazić, Zoran
AU  - Trifković, Branka
PY  - 2012
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1719
AB  - Background/Aim. Fracture toughness determines functional crown strenght and prevents damages on ceramics during mastication. There is a lack of relevant literature data about fracture toughness of crowns made by feather-edge preparation. Mechanical testing of ceramic samples is supposed to show if feather-edge tooth preparation is a successful method for making ceramic crowns without any risk of reduction of their mechanical properties. This research was done to establish effects of feather-edge tooth preparation on fracture toughness of single zirconia ceramic crowns. Methods. The research was performed as an experimental study. Sixty (60) ceramic crowns were made on non-carious extracted human premolars. Thirty (30) crowns were made on the basis of feather-edge preparation (experimental group I). The group II included 30 crowns made on 1 mm rounded shoulder. Crowns fabrication was executed on a copy mill production system 'Zirkonzahn' (Zirkonzahn GMBH, Gais, Germany). The spherical compression test was used to determine fracture toughness, using 6 mm diameter ceramic ball. Fracture load for damaging ceramic crown was recorded on a universal testing machine - Zwick, type 1464, with the speed of 0.05 mm/min. Results. The results of this research introduced significant differences between fracture toughness of ceramic samples in every examined group. However, fracture toughness of crowns from both group was above 2 000 N, what was double beyond a recommended value. The mean value of fracture toughness in the feather-edge group was 2 090 N, and in shoulder group it was 2 214 N. Conclusion. This research showed a high fracture toughness of zirconia crowns made on feather-edge preparation. The examined crowns showed a fracture resistance at a sufficient distance in relation to the minimum values of functional loads. Further research of functional loads of these crown is necessary, as well as research of marginal adaptation of cemented crowns and gingival inflammatory response.
AB  - Uvod/Cilj. Otpornost na lom uslovljava čvrstoću krune u toku funkcionalnih opterećenja i sprečava oštećenje keramike u toku mastikacije. U literaturi nema podataka o otpornosti na lom kruna izrađenih na bazi linijske preparacije. Mehaničkim testiranjem keramičkih uzoraka treba pokazati da li se linijska preparacija zuba može primeniti bez rizika od degradacije mehaničkih osobina keramičkih kruna. Ovo istraživanje sprovedeno je sa ciljem da se utvrdi uticaj linijske preparacije zuba na otpornost na lom pojedinačnih cirkonijumskih keramičkih kruna. Metode. Istraživanje je obavljeno kao eksperimentalna studija. Izrađeno je ukupno 60 keramičkih kruna na nekarioznim ekstrahovanim humanim premolarima. Ukupno 30 kruna izrađeno je na bazi linijske preparacije (prva eksperimentalna grupa), dok je u drugoj grupi izrađeno 30 kruna na osnovu preparacije oblika pravouglog stepenika sa unutrašnjim zaobljenjem. Za izradu kruna korišćen je kopir-frez sistem 'Zirkonzahn' (Zirkonzahn GMBH, Gais, Germany). Za određivanje otpornosti na lom primenjen je test pritiska sa sferičnim opterećenjem - keramičkom kuglom prečnika 6 mm. Sila potrebna da dovede do loma keramičke krune zabeležena je na univerzalnoj mašini za testiranje materijala Zwick, tipa 1464, koja se kretala brzinom od 0,05 mm/min. Rezultati. Rezultati ovog ispitivanja ukazali su na značajne razlike između otpornosti na lom dve ispitivane grupe kruna. Prosečna otpornost na lom obe grupe kruna bila je iznad 2 000 N, što je dvostruko više od preporučene vrednosti. Krune na bazi linijske preparacije imale su prosečnu vrednost otpornosti na lom od 2 090 N, dok je u drugoj grupi otpornost iznosila 2 214 N. Zaključak Eksperimentalnim ispitivanjem utvrđena je visoka otpornost na lom cirkonijumskih keramičkih kruna izrađenih na osnovu linijske preparacije zuba. Ispitivane krune imale su otpornost na lom na dovoljnoj distanci u odnosu na minimalne vrednosti funkcionalnog opterećenja. Neophodna su dalja istraživanja funkcionalnog opterećenja ovakvih kruna u uslovima in vivo kao i ispitivanje rubnog zaptivanja cementiranih kruna i inflamatornog odgovora gingive.
PB  - Vojnomedicinska akademija - Institut za naučne informacije, Beograd
T2  - Vojnosanitetski pregled
T1  - Fracture toughness of zirconia ceramic crowns made by feather-edge tooth preparation design
T1  - Otpornost na lom cirkonijumskih keramičkih kruna izrađenih na bazi linijske preparacije zuba
VL  - 69
IS  - 7
SP  - 562
EP  - 568
DO  - 10.2298/VSP100820004M
ER  - 

@article{
author = "Mirković, Nemanja and Špadijer-Gostović, Aleksandra and Lazić, Zoran and Trifković, Branka",
year = "2012",
abstract = "Background/Aim. Fracture toughness determines functional crown strenght and prevents damages on ceramics during mastication. There is a lack of relevant literature data about fracture toughness of crowns made by feather-edge preparation. Mechanical testing of ceramic samples is supposed to show if feather-edge tooth preparation is a successful method for making ceramic crowns without any risk of reduction of their mechanical properties. This research was done to establish effects of feather-edge tooth preparation on fracture toughness of single zirconia ceramic crowns. Methods. The research was performed as an experimental study. Sixty (60) ceramic crowns were made on non-carious extracted human premolars. Thirty (30) crowns were made on the basis of feather-edge preparation (experimental group I). The group II included 30 crowns made on 1 mm rounded shoulder. Crowns fabrication was executed on a copy mill production system 'Zirkonzahn' (Zirkonzahn GMBH, Gais, Germany). The spherical compression test was used to determine fracture toughness, using 6 mm diameter ceramic ball. Fracture load for damaging ceramic crown was recorded on a universal testing machine - Zwick, type 1464, with the speed of 0.05 mm/min. Results. The results of this research introduced significant differences between fracture toughness of ceramic samples in every examined group. However, fracture toughness of crowns from both group was above 2 000 N, what was double beyond a recommended value. The mean value of fracture toughness in the feather-edge group was 2 090 N, and in shoulder group it was 2 214 N. Conclusion. This research showed a high fracture toughness of zirconia crowns made on feather-edge preparation. The examined crowns showed a fracture resistance at a sufficient distance in relation to the minimum values of functional loads. Further research of functional loads of these crown is necessary, as well as research of marginal adaptation of cemented crowns and gingival inflammatory response., Uvod/Cilj. Otpornost na lom uslovljava čvrstoću krune u toku funkcionalnih opterećenja i sprečava oštećenje keramike u toku mastikacije. U literaturi nema podataka o otpornosti na lom kruna izrađenih na bazi linijske preparacije. Mehaničkim testiranjem keramičkih uzoraka treba pokazati da li se linijska preparacija zuba može primeniti bez rizika od degradacije mehaničkih osobina keramičkih kruna. Ovo istraživanje sprovedeno je sa ciljem da se utvrdi uticaj linijske preparacije zuba na otpornost na lom pojedinačnih cirkonijumskih keramičkih kruna. Metode. Istraživanje je obavljeno kao eksperimentalna studija. Izrađeno je ukupno 60 keramičkih kruna na nekarioznim ekstrahovanim humanim premolarima. Ukupno 30 kruna izrađeno je na bazi linijske preparacije (prva eksperimentalna grupa), dok je u drugoj grupi izrađeno 30 kruna na osnovu preparacije oblika pravouglog stepenika sa unutrašnjim zaobljenjem. Za izradu kruna korišćen je kopir-frez sistem 'Zirkonzahn' (Zirkonzahn GMBH, Gais, Germany). Za određivanje otpornosti na lom primenjen je test pritiska sa sferičnim opterećenjem - keramičkom kuglom prečnika 6 mm. Sila potrebna da dovede do loma keramičke krune zabeležena je na univerzalnoj mašini za testiranje materijala Zwick, tipa 1464, koja se kretala brzinom od 0,05 mm/min. Rezultati. Rezultati ovog ispitivanja ukazali su na značajne razlike između otpornosti na lom dve ispitivane grupe kruna. Prosečna otpornost na lom obe grupe kruna bila je iznad 2 000 N, što je dvostruko više od preporučene vrednosti. Krune na bazi linijske preparacije imale su prosečnu vrednost otpornosti na lom od 2 090 N, dok je u drugoj grupi otpornost iznosila 2 214 N. Zaključak Eksperimentalnim ispitivanjem utvrđena je visoka otpornost na lom cirkonijumskih keramičkih kruna izrađenih na osnovu linijske preparacije zuba. Ispitivane krune imale su otpornost na lom na dovoljnoj distanci u odnosu na minimalne vrednosti funkcionalnog opterećenja. Neophodna su dalja istraživanja funkcionalnog opterećenja ovakvih kruna u uslovima in vivo kao i ispitivanje rubnog zaptivanja cementiranih kruna i inflamatornog odgovora gingive.",
publisher = "Vojnomedicinska akademija - Institut za naučne informacije, Beograd",
journal = "Vojnosanitetski pregled",
title = "Fracture toughness of zirconia ceramic crowns made by feather-edge tooth preparation design, Otpornost na lom cirkonijumskih keramičkih kruna izrađenih na bazi linijske preparacije zuba",
volume = "69",
number = "7",
pages = "562-568",
doi = "10.2298/VSP100820004M"
}

Mirković, N., Špadijer-Gostović, A., Lazić, Z.,& Trifković, B.. (2012). Fracture toughness of zirconia ceramic crowns made by feather-edge tooth preparation design. in Vojnosanitetski pregled
Vojnomedicinska akademija - Institut za naučne informacije, Beograd., 69(7), 562-568.
https://doi.org/10.2298/VSP100820004M

Mirković N, Špadijer-Gostović A, Lazić Z, Trifković B. Fracture toughness of zirconia ceramic crowns made by feather-edge tooth preparation design. in Vojnosanitetski pregled. 2012;69(7):562-568.
doi:10.2298/VSP100820004M .

Mirković, Nemanja, Špadijer-Gostović, Aleksandra, Lazić, Zoran, Trifković, Branka, "Fracture toughness of zirconia ceramic crowns made by feather-edge tooth preparation design" in Vojnosanitetski pregled, 69, no. 7 (2012):562-568,
https://doi.org/10.2298/VSP100820004M . .

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 .

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 .

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 . .