TY  - JOUR
AU  - Šarac, Dušan
AU  - Mitrović, Nenad
AU  - Tanasić, Ivan
AU  - Misković, Žarko
AU  - Tihaček-Šojić, Ljiljana
PY  - 2019
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2450
AB  - Dental-implant overload can cause bone resorption. Load-transfer characteristics of dental implants are affected by their macro-design parameters. The goal of this study was to experimentally analyse the load-transfer characteristics of different dental implants, using polymethyl-methacrylate blocks. Three polymethyl-methacrylate blocks were created, with dimensions of (68 x 25 x 9) mm. Three dental implants, Nobel empty set3.5 mm x 15 mm, Strauman empty set4.1 mm x 10 mm and Strauman empty set4.8 mm x 12 mm. were placed in separate blocks. The samples were supported by a three-point-bending set-up and loaded with an axial force of 600 N. The 3D digital image correlation method was employed for strain and displacement measurements. The highest displacement and von Mises strain values were found for Strauman empty set4.1 mm x 10 mm (p  lt  0.05), 0.186 mm and 0.596 %, respectively. The sample of Nobel empty set3.5 mm x 15 mm showed the lowest strain values. The sample of Strauman empty set4.8 mm x 12 mm (p > 0.05) had similar strain values as Nobel empty set3.5 mm x 15 mm. The load transfer during axial loading was primarily affected by the size of the implant contact surface. The displacement and strain values in the implant vicinity may provide an insight into the effect of dental-implant design on the load transfer.
PB  - Inst Za Kovinske Materiale I In Tehnologie, Ljubjana
T2  - Materiali in Tehnologije
T1  - Experimental analysis of dental-implant load transfer in polymethyl-methacrylate blocks
VL  - 53
IS  - 1
SP  - 133
EP  - 137
DO  - 10.17222/mit.2018.081
ER  - 

@article{
author = "Šarac, Dušan and Mitrović, Nenad and Tanasić, Ivan and Misković, Žarko and Tihaček-Šojić, Ljiljana",
year = "2019",
abstract = "Dental-implant overload can cause bone resorption. Load-transfer characteristics of dental implants are affected by their macro-design parameters. The goal of this study was to experimentally analyse the load-transfer characteristics of different dental implants, using polymethyl-methacrylate blocks. Three polymethyl-methacrylate blocks were created, with dimensions of (68 x 25 x 9) mm. Three dental implants, Nobel empty set3.5 mm x 15 mm, Strauman empty set4.1 mm x 10 mm and Strauman empty set4.8 mm x 12 mm. were placed in separate blocks. The samples were supported by a three-point-bending set-up and loaded with an axial force of 600 N. The 3D digital image correlation method was employed for strain and displacement measurements. The highest displacement and von Mises strain values were found for Strauman empty set4.1 mm x 10 mm (p  lt  0.05), 0.186 mm and 0.596 %, respectively. The sample of Nobel empty set3.5 mm x 15 mm showed the lowest strain values. The sample of Strauman empty set4.8 mm x 12 mm (p > 0.05) had similar strain values as Nobel empty set3.5 mm x 15 mm. The load transfer during axial loading was primarily affected by the size of the implant contact surface. The displacement and strain values in the implant vicinity may provide an insight into the effect of dental-implant design on the load transfer.",
publisher = "Inst Za Kovinske Materiale I In Tehnologie, Ljubjana",
journal = "Materiali in Tehnologije",
title = "Experimental analysis of dental-implant load transfer in polymethyl-methacrylate blocks",
volume = "53",
number = "1",
pages = "133-137",
doi = "10.17222/mit.2018.081"
}

Šarac, D., Mitrović, N., Tanasić, I., Misković, Ž.,& Tihaček-Šojić, L.. (2019). Experimental analysis of dental-implant load transfer in polymethyl-methacrylate blocks. in Materiali in Tehnologije
Inst Za Kovinske Materiale I In Tehnologie, Ljubjana., 53(1), 133-137.
https://doi.org/10.17222/mit.2018.081

Šarac D, Mitrović N, Tanasić I, Misković Ž, Tihaček-Šojić L. Experimental analysis of dental-implant load transfer in polymethyl-methacrylate blocks. in Materiali in Tehnologije. 2019;53(1):133-137.
doi:10.17222/mit.2018.081 .

Šarac, Dušan, Mitrović, Nenad, Tanasić, Ivan, Misković, Žarko, Tihaček-Šojić, Ljiljana, "Experimental analysis of dental-implant load transfer in polymethyl-methacrylate blocks" in Materiali in Tehnologije, 53, no. 1 (2019):133-137,
https://doi.org/10.17222/mit.2018.081 . .

TY  - JOUR
AU  - Šarac, Dušan
AU  - Mitrović, Nenad
AU  - Tanasić, Ivan
AU  - Tihaček-Šojić, Ljiljana
PY  - 2018
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2336
AB  - Deformations in the vicinity of dental implants are affected by their design and if threshold level of 0.3 % is surpassed, bone resorption could occur. The goal of this study is to present a novel experimental approch for the analysis of effect od dental implant geometry on the surrounding structure strain values. A bone block model, with dimensions of 68x25x9 mm, was made from polymethyl-methacrylate. 3D printed block mold also provided a fixture for vertically placed Strauman ø4.0x12 mm. The sample was loaded in a three-point bending setup. The axial force of 600 N was applied on the dental implant. The Digital Image Correlation method was used for strain and displacement measurement. The highest von Mises strain of 0.7 % is located in the area of implant neck. The maximum displacement value in loading direction was 0.466 mm. Surface strain and displacement are correlated with implant geometry. This experimental methodology can be utilized to estimate dental implant load transfer characteristics.
AB  - Dizajn dentalnih implanata utiče na vrednosti deformacija koje nastaju u njihovoj okolini, i ako se pređe granična vrednost od 0.3 %, može doći do resorpcije kosti. Cilj ove studije je da predstavi novi eksperimentalni pristup za analizu uticaja geometrije dentalnih implanata na deformacije okolne strukture. Model kosti, sa dimenzijama od 68h25h9 mm, je napravljen od polimetil-metakrilata. Kalup za model koji je napravljen pomoću tehnike 3D štampe, je takođe služio i kao fiksator položaja za vertikalno postavljeni implant Štrauman ø4.0x12 mm. Uzorak je opterećen na savijanje u tri tačke. Aksijalna sila od 600 N je primenjena na dentalni implant. Za merenje deformacija i pomeraja je korišćena metoda Digitalne korelacije slika. Najveće vrednosti Von Mizesovih deformacija od 0.7 % su izmerene u području vrata implanta. Maksimalne vrednosti pomeraja u pravcu opterećenja su iznosile 0.466 mm. Površinska deformacija i pomeraji su povezani sa geometrijom implanata. Ova eksperimentalna metodologija se može koristiti u cilju određivanja karakteristika prenosa opterećenja dentalnih.
PB  - Univerzitet u Beogradu - Mašinski fakultet, Beograd
T2  - FME Transactions
T1  - Experimental methodology for analysis of influence of dental implant design on load transfer
T1  - Eksperimentalna metodologija za određivanje uticaja dizajna dentalnih implanata na prenos opterećenja
VL  - 46
IS  - 2
SP  - 266
EP  - 271
DO  - 10.5937/fmet1802266S
ER  - 

@article{
author = "Šarac, Dušan and Mitrović, Nenad and Tanasić, Ivan and Tihaček-Šojić, Ljiljana",
year = "2018",
abstract = "Deformations in the vicinity of dental implants are affected by their design and if threshold level of 0.3 % is surpassed, bone resorption could occur. The goal of this study is to present a novel experimental approch for the analysis of effect od dental implant geometry on the surrounding structure strain values. A bone block model, with dimensions of 68x25x9 mm, was made from polymethyl-methacrylate. 3D printed block mold also provided a fixture for vertically placed Strauman ø4.0x12 mm. The sample was loaded in a three-point bending setup. The axial force of 600 N was applied on the dental implant. The Digital Image Correlation method was used for strain and displacement measurement. The highest von Mises strain of 0.7 % is located in the area of implant neck. The maximum displacement value in loading direction was 0.466 mm. Surface strain and displacement are correlated with implant geometry. This experimental methodology can be utilized to estimate dental implant load transfer characteristics., Dizajn dentalnih implanata utiče na vrednosti deformacija koje nastaju u njihovoj okolini, i ako se pređe granična vrednost od 0.3 %, može doći do resorpcije kosti. Cilj ove studije je da predstavi novi eksperimentalni pristup za analizu uticaja geometrije dentalnih implanata na deformacije okolne strukture. Model kosti, sa dimenzijama od 68h25h9 mm, je napravljen od polimetil-metakrilata. Kalup za model koji je napravljen pomoću tehnike 3D štampe, je takođe služio i kao fiksator položaja za vertikalno postavljeni implant Štrauman ø4.0x12 mm. Uzorak je opterećen na savijanje u tri tačke. Aksijalna sila od 600 N je primenjena na dentalni implant. Za merenje deformacija i pomeraja je korišćena metoda Digitalne korelacije slika. Najveće vrednosti Von Mizesovih deformacija od 0.7 % su izmerene u području vrata implanta. Maksimalne vrednosti pomeraja u pravcu opterećenja su iznosile 0.466 mm. Površinska deformacija i pomeraji su povezani sa geometrijom implanata. Ova eksperimentalna metodologija se može koristiti u cilju određivanja karakteristika prenosa opterećenja dentalnih.",
publisher = "Univerzitet u Beogradu - Mašinski fakultet, Beograd",
journal = "FME Transactions",
title = "Experimental methodology for analysis of influence of dental implant design on load transfer, Eksperimentalna metodologija za određivanje uticaja dizajna dentalnih implanata na prenos opterećenja",
volume = "46",
number = "2",
pages = "266-271",
doi = "10.5937/fmet1802266S"
}

Šarac, D., Mitrović, N., Tanasić, I.,& Tihaček-Šojić, L.. (2018). Experimental methodology for analysis of influence of dental implant design on load transfer. in FME Transactions
Univerzitet u Beogradu - Mašinski fakultet, Beograd., 46(2), 266-271.
https://doi.org/10.5937/fmet1802266S

Šarac D, Mitrović N, Tanasić I, Tihaček-Šojić L. Experimental methodology for analysis of influence of dental implant design on load transfer. in FME Transactions. 2018;46(2):266-271.
doi:10.5937/fmet1802266S .

Šarac, Dušan, Mitrović, Nenad, Tanasić, Ivan, Tihaček-Šojić, Ljiljana, "Experimental methodology for analysis of influence of dental implant design on load transfer" in FME Transactions, 46, no. 2 (2018):266-271,
https://doi.org/10.5937/fmet1802266S . .

TY  - JOUR
AU  - Grga, Đurica
AU  - Marjanović, Marina
AU  - Hut, Igor
AU  - Dželetović, Bojan
AU  - Koruga, Đuro
PY  - 2012
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1721
AB  - Emerging technologies and new nanoscale information have potential to transform dental practice by improving all aspects of diagnostics and therapy. Nanocharacterization allows understanding of oral diseases at molecular and cellular levels which eventually can increase the success of prevention and treatment. Opto-magnetic spectroscopy (OMS) is a promising new technique based on light-matter interaction which allows insight into the quantum state of matter. Since biomolecules and tissues are usually paramagnetic or diamagnetic materials it is possible to determine the dynamics of para-and diamagnetism at different teeth structures using that method. The topography of the surface of a sample can be obtained with a very high resolution using atomic force microscopy (AFM), which allows observation of minimal changes up to 10 nm, while magnetic force microscopy (MFM) is used to record the magnetic field gradient and its distribution over the surface of a sample. The aim of this study was to determine the possibility of AFM and MFM for the characterization of dental calculus, and a potential application of OMS for the detection of subgingival dental calculus.
AB  - Inovativne tehnologije i nove informacije na nanonivou imaju potencijal da poboljšaju stomatološku praksu, unapređujući sve aspekte dijagnostike i terapije. Nanokarakterizacija omogućava razumevanje razvoja oboljenja na ćelijskom i molekularnom nivou, što za krajnji rezultat može imati poboljšanje prevencije i uspeha lečenja. Optomagnetna spektroskopija (engl. opto-magnetic spectroscopy - OMS) je nova tehnika koja obećava, a zasnovana je na interakciji svetlosti i materije koja omogućava uvid u kvantno stanje materije. S obzirom na to da biomolekuli i tkiva mogu ispoljavati osobine paramagnetičnosti, odnosno dijamagnetičnosti, ovom metodom moguće je utvrditi dinamiku paramagnetizma i dijamagnetizma na različitim strukturama zuba. Pomoću mikroskopije atomskih sila (engl. atomic force microscopy - AFM) moguće je dobiti topografiju površine uzorka vrlo visoke rezolucije, čime se uočavaju i najmanje promene sve do 10 nm, dok se mikroskopija magnetnih sila (engl. magnetic force microscopy - MFM) koristi za snimanje gradijenta magnetnog polja i njegove raspodele po površini uzorka. Cilj ovog rada bio je da prikaže mogućnosti primene AFM i MFM za karakterizaciju zubnog kamenca, kao i primene OMS za otkrivanje subgingivalnog kalkulusa.
PB  - Srpsko lekarsko društvo - Stomatološka sekcija, Beograd
T2  - Stomatološki glasnik Srbije
T1  - Dental calculus: Nanocharacterization
T1  - Zubni kamenac - karakterizacija na nanonivou
VL  - 59
IS  - 3
SP  - 154
EP  - 159
DO  - 10.2298/SGS1203154G
ER  - 

@article{
author = "Grga, Đurica and Marjanović, Marina and Hut, Igor and Dželetović, Bojan and Koruga, Đuro",
year = "2012",
abstract = "Emerging technologies and new nanoscale information have potential to transform dental practice by improving all aspects of diagnostics and therapy. Nanocharacterization allows understanding of oral diseases at molecular and cellular levels which eventually can increase the success of prevention and treatment. Opto-magnetic spectroscopy (OMS) is a promising new technique based on light-matter interaction which allows insight into the quantum state of matter. Since biomolecules and tissues are usually paramagnetic or diamagnetic materials it is possible to determine the dynamics of para-and diamagnetism at different teeth structures using that method. The topography of the surface of a sample can be obtained with a very high resolution using atomic force microscopy (AFM), which allows observation of minimal changes up to 10 nm, while magnetic force microscopy (MFM) is used to record the magnetic field gradient and its distribution over the surface of a sample. The aim of this study was to determine the possibility of AFM and MFM for the characterization of dental calculus, and a potential application of OMS for the detection of subgingival dental calculus., Inovativne tehnologije i nove informacije na nanonivou imaju potencijal da poboljšaju stomatološku praksu, unapređujući sve aspekte dijagnostike i terapije. Nanokarakterizacija omogućava razumevanje razvoja oboljenja na ćelijskom i molekularnom nivou, što za krajnji rezultat može imati poboljšanje prevencije i uspeha lečenja. Optomagnetna spektroskopija (engl. opto-magnetic spectroscopy - OMS) je nova tehnika koja obećava, a zasnovana je na interakciji svetlosti i materije koja omogućava uvid u kvantno stanje materije. S obzirom na to da biomolekuli i tkiva mogu ispoljavati osobine paramagnetičnosti, odnosno dijamagnetičnosti, ovom metodom moguće je utvrditi dinamiku paramagnetizma i dijamagnetizma na različitim strukturama zuba. Pomoću mikroskopije atomskih sila (engl. atomic force microscopy - AFM) moguće je dobiti topografiju površine uzorka vrlo visoke rezolucije, čime se uočavaju i najmanje promene sve do 10 nm, dok se mikroskopija magnetnih sila (engl. magnetic force microscopy - MFM) koristi za snimanje gradijenta magnetnog polja i njegove raspodele po površini uzorka. Cilj ovog rada bio je da prikaže mogućnosti primene AFM i MFM za karakterizaciju zubnog kamenca, kao i primene OMS za otkrivanje subgingivalnog kalkulusa.",
publisher = "Srpsko lekarsko društvo - Stomatološka sekcija, Beograd",
journal = "Stomatološki glasnik Srbije",
title = "Dental calculus: Nanocharacterization, Zubni kamenac - karakterizacija na nanonivou",
volume = "59",
number = "3",
pages = "154-159",
doi = "10.2298/SGS1203154G"
}

Grga, Đ., Marjanović, M., Hut, I., Dželetović, B.,& Koruga, Đ.. (2012). Dental calculus: Nanocharacterization. in Stomatološki glasnik Srbije
Srpsko lekarsko društvo - Stomatološka sekcija, Beograd., 59(3), 154-159.
https://doi.org/10.2298/SGS1203154G

Grga Đ, Marjanović M, Hut I, Dželetović B, Koruga Đ. Dental calculus: Nanocharacterization. in Stomatološki glasnik Srbije. 2012;59(3):154-159.
doi:10.2298/SGS1203154G .

Grga, Đurica, Marjanović, Marina, Hut, Igor, Dželetović, Bojan, Koruga, Đuro, "Dental calculus: Nanocharacterization" in Stomatološki glasnik Srbije, 59, no. 3 (2012):154-159,
https://doi.org/10.2298/SGS1203154G . .