TY  - JOUR
AU  - Tatić, Uroš
AU  - Miletić, Vesna
AU  - Sedmak, Simon
AU  - Mitrović, Nenad
AU  - Ezdenci, Andrea
AU  - Gubeljak, Lara
AU  - Milošević, Miloš
PY  - 2014
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1935
AB  - In restorative dentistry it is common practice to replace amalgams with resin based dental composites, with minimal or no additional cavity preparation. Polymerization shrinkage of dental composites causes stress, whose influence is transferred to tooth tissue which may result in the occurrence of micro-cracks and post-operative pain. The aim of this study is to determine the effects of different cavity shapes on stress and strain distribution which occurred due to composite shrinkage. Toward this aim, experimental (Digital Image Correlation method – DIC) and numerical (finite element method – FEM) techniques are used. The numerical model is verified by comparing its results with those obtained by experimental methods. Upon verification, the 3D model of the cavity is modified to develop two new models with the same tooth geometry, but different cavity shapes, in order to determine the effect of their shapes on stress distribution. It is determined that the thickness of dentine around the cavity plays a significant role in stress and strain distribution.
AB  - U restorativnoj stomatologiji je učestala praksa zamene amalgama stomatološkim kompozitima na bazi smole, uz minimalnu dodatnu pripremu kaviteta ili bez nje. Polimerizacijsko skupljanje stomatoloških kompozita prouzrokuje napon, čiji se uticaj prenosi na zubno tkivo, što može dovesti do pojave mikroprslina i postoperativnih bolova. Cilj ovog rada je da se odredi uticaj različitih oblika kaviteta na raspodelu napona i deformacija. izazvanih skupljanjem kompozita. U tu svrhu su korišćene eksperimentalna metoda korelacije digitalnih slika (DIC) i numerička metoda konačnih elemenata (FEM). Numerički model je verifikovan poređenjem rezultata proračuna sa rezultatima dobijenim eksperimentalnom metodom. Nakon verifikacije, postojeći 3D model kaviteta je modifikovan u cilju dobijanja dva nova modela sa istom geometrijom zuba i različitim oblicima kaviteta, kako bi se odredio uticaj ovih oblika na raspodelu napona. Utvrđeno je da debljina dentina oko kaviteta igra značajnu ulogu u raspodeli napona i deformacija.
PB  - Institut za ispitivanje materijala, Beograd
T2  - Integritet i vek konstrukcija
T1  - Influence of the cavity shape in restorative dentistry on the stress-strain distribution in dentine and enamel caused by polymerization
T1  - Uticaj oblika kaviteta u restorativnoj stomatologiji na raspodelu napon-deformacija u dentinu i gleđi izazvanoj polimerizacijom
VL  - 14
IS  - 3
SP  - 199
EP  - 204
UR  - https://hdl.handle.net/21.15107/rcub_smile_1935
ER  - 

@article{
author = "Tatić, Uroš and Miletić, Vesna and Sedmak, Simon and Mitrović, Nenad and Ezdenci, Andrea and Gubeljak, Lara and Milošević, Miloš",
year = "2014",
abstract = "In restorative dentistry it is common practice to replace amalgams with resin based dental composites, with minimal or no additional cavity preparation. Polymerization shrinkage of dental composites causes stress, whose influence is transferred to tooth tissue which may result in the occurrence of micro-cracks and post-operative pain. The aim of this study is to determine the effects of different cavity shapes on stress and strain distribution which occurred due to composite shrinkage. Toward this aim, experimental (Digital Image Correlation method – DIC) and numerical (finite element method – FEM) techniques are used. The numerical model is verified by comparing its results with those obtained by experimental methods. Upon verification, the 3D model of the cavity is modified to develop two new models with the same tooth geometry, but different cavity shapes, in order to determine the effect of their shapes on stress distribution. It is determined that the thickness of dentine around the cavity plays a significant role in stress and strain distribution., U restorativnoj stomatologiji je učestala praksa zamene amalgama stomatološkim kompozitima na bazi smole, uz minimalnu dodatnu pripremu kaviteta ili bez nje. Polimerizacijsko skupljanje stomatoloških kompozita prouzrokuje napon, čiji se uticaj prenosi na zubno tkivo, što može dovesti do pojave mikroprslina i postoperativnih bolova. Cilj ovog rada je da se odredi uticaj različitih oblika kaviteta na raspodelu napona i deformacija. izazvanih skupljanjem kompozita. U tu svrhu su korišćene eksperimentalna metoda korelacije digitalnih slika (DIC) i numerička metoda konačnih elemenata (FEM). Numerički model je verifikovan poređenjem rezultata proračuna sa rezultatima dobijenim eksperimentalnom metodom. Nakon verifikacije, postojeći 3D model kaviteta je modifikovan u cilju dobijanja dva nova modela sa istom geometrijom zuba i različitim oblicima kaviteta, kako bi se odredio uticaj ovih oblika na raspodelu napona. Utvrđeno je da debljina dentina oko kaviteta igra značajnu ulogu u raspodeli napona i deformacija.",
publisher = "Institut za ispitivanje materijala, Beograd",
journal = "Integritet i vek konstrukcija",
title = "Influence of the cavity shape in restorative dentistry on the stress-strain distribution in dentine and enamel caused by polymerization, Uticaj oblika kaviteta u restorativnoj stomatologiji na raspodelu napon-deformacija u dentinu i gleđi izazvanoj polimerizacijom",
volume = "14",
number = "3",
pages = "199-204",
url = "https://hdl.handle.net/21.15107/rcub_smile_1935"
}

Tatić, U., Miletić, V., Sedmak, S., Mitrović, N., Ezdenci, A., Gubeljak, L.,& Milošević, M.. (2014). Influence of the cavity shape in restorative dentistry on the stress-strain distribution in dentine and enamel caused by polymerization. in Integritet i vek konstrukcija
Institut za ispitivanje materijala, Beograd., 14(3), 199-204.
https://hdl.handle.net/21.15107/rcub_smile_1935

Tatić U, Miletić V, Sedmak S, Mitrović N, Ezdenci A, Gubeljak L, Milošević M. Influence of the cavity shape in restorative dentistry on the stress-strain distribution in dentine and enamel caused by polymerization. in Integritet i vek konstrukcija. 2014;14(3):199-204.
https://hdl.handle.net/21.15107/rcub_smile_1935 .

Tatić, Uroš, Miletić, Vesna, Sedmak, Simon, Mitrović, Nenad, Ezdenci, Andrea, Gubeljak, Lara, Milošević, Miloš, "Influence of the cavity shape in restorative dentistry on the stress-strain distribution in dentine and enamel caused by polymerization" in Integritet i vek konstrukcija, 14, no. 3 (2014):199-204,
https://hdl.handle.net/21.15107/rcub_smile_1935 .

TY  - CONF
AU  - Milošević, Miloš
AU  - Tatić, Uroš
AU  - Sedmak, Simon
AU  - Perović, Jasmina
AU  - Miletić, Vesna
PY  - 2014
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1883
AB  - The purpose of this paper was to determine tensile loading that leads to dental restoration failure, i.e. the critical values of stress. In order to analyze stress distribution within the restoration and tooth, mechanical properties of materials and tissues, such as Young modulus and Poisson's ratio were taken into account. An additional purpose of the paper was to determine whether tensile or shear stresses that occur in the restorative composite and the surrounding enamel cause this failure. Tensile stress is caused by forces acting in the direction perpendicular to the cross-section of a given element, whereas shear stresses are caused by forces parallel to said cross section. A 3D numerical model of a tooth including three different materials (dentine, enamel and compo-site) was made and used for these calculations. These results will be used as a base for the physical experiment.
PB  - Trans Tech Publications Ltd, Durnten-Zurich
C3  - Proceedings of the 14th Symposium on Experimental Stress Analysis & Materials Testing
T1  - Calculation of maximum tensile and shear forces in restorative materials using finite element method
VL  - 601
SP  - 151
EP  - +
DO  - 10.4028/www.scientific.net/KEM.601.151
ER  - 

@conference{
author = "Milošević, Miloš and Tatić, Uroš and Sedmak, Simon and Perović, Jasmina and Miletić, Vesna",
year = "2014",
abstract = "The purpose of this paper was to determine tensile loading that leads to dental restoration failure, i.e. the critical values of stress. In order to analyze stress distribution within the restoration and tooth, mechanical properties of materials and tissues, such as Young modulus and Poisson's ratio were taken into account. An additional purpose of the paper was to determine whether tensile or shear stresses that occur in the restorative composite and the surrounding enamel cause this failure. Tensile stress is caused by forces acting in the direction perpendicular to the cross-section of a given element, whereas shear stresses are caused by forces parallel to said cross section. A 3D numerical model of a tooth including three different materials (dentine, enamel and compo-site) was made and used for these calculations. These results will be used as a base for the physical experiment.",
publisher = "Trans Tech Publications Ltd, Durnten-Zurich",
journal = "Proceedings of the 14th Symposium on Experimental Stress Analysis & Materials Testing",
title = "Calculation of maximum tensile and shear forces in restorative materials using finite element method",
volume = "601",
pages = "151-+",
doi = "10.4028/www.scientific.net/KEM.601.151"
}

Milošević, M., Tatić, U., Sedmak, S., Perović, J.,& Miletić, V.. (2014). Calculation of maximum tensile and shear forces in restorative materials using finite element method. in Proceedings of the 14th Symposium on Experimental Stress Analysis & Materials Testing
Trans Tech Publications Ltd, Durnten-Zurich., 601, 151-+.
https://doi.org/10.4028/www.scientific.net/KEM.601.151

Milošević M, Tatić U, Sedmak S, Perović J, Miletić V. Calculation of maximum tensile and shear forces in restorative materials using finite element method. in Proceedings of the 14th Symposium on Experimental Stress Analysis & Materials Testing. 2014;601:151-+.
doi:10.4028/www.scientific.net/KEM.601.151 .

Milošević, Miloš, Tatić, Uroš, Sedmak, Simon, Perović, Jasmina, Miletić, Vesna, "Calculation of maximum tensile and shear forces in restorative materials using finite element method" in Proceedings of the 14th Symposium on Experimental Stress Analysis & Materials Testing, 601 (2014):151-+,
https://doi.org/10.4028/www.scientific.net/KEM.601.151 . .