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  - Mitrović, Nenad
AU  - Miletić, Vesna
AU  - Tatić, Uroš
AU  - Ezdenci, Andrea
PY  - 2014
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1858
AB  - Local polymerization stress occurs due to polymerization shrinkage of resin based composites adhesively bonded to tooth tissues. Shrinkage causes local displacements of cavity walls, with possible occurrence of micro-cracks in the enamel, dentin and/or material itself. In order to design a cavity for experimental testing of polymerization shrinkage of dental composites using 3D optical analysis, in this paper finite element method (FEM) was used to analyze numerical models with different cavity radiuses. 3D optical strain and displacement analysis of composite materials and cavity walls is limited by equipment sensitivity i.e. 0.01% for strain and 1 micron for displacement. This paper presents the development of 3D computer premolar models with varying cavity radiuses, and local stress, strain and displacement analysis using FEM. Model verification was performed by comparing obtained results with data from the scientific literature. Using the FEM analysis of local strains, displacements and stresses exerted on cavity walls, it was concluded that the model with 1 mm radius was optimal for experimental optical 3D displacement analysis.
PB  - Trans Tech Publications Ltd, Durnten-Zurich
C3  - Local Mechanical Properties Ix
T1  - Analysis of Composite Shrinkage Stresses on 3D Premolar Models with Different Cavity Design using Finite Element Method
VL  - 586
SP  - 202
EP  - +
DO  - 10.4028/www.scientific.net/KEM.586.202
ER  - 

@conference{
author = "Milošević, Miloš and Mitrović, Nenad and Miletić, Vesna and Tatić, Uroš and Ezdenci, Andrea",
year = "2014",
abstract = "Local polymerization stress occurs due to polymerization shrinkage of resin based composites adhesively bonded to tooth tissues. Shrinkage causes local displacements of cavity walls, with possible occurrence of micro-cracks in the enamel, dentin and/or material itself. In order to design a cavity for experimental testing of polymerization shrinkage of dental composites using 3D optical analysis, in this paper finite element method (FEM) was used to analyze numerical models with different cavity radiuses. 3D optical strain and displacement analysis of composite materials and cavity walls is limited by equipment sensitivity i.e. 0.01% for strain and 1 micron for displacement. This paper presents the development of 3D computer premolar models with varying cavity radiuses, and local stress, strain and displacement analysis using FEM. Model verification was performed by comparing obtained results with data from the scientific literature. Using the FEM analysis of local strains, displacements and stresses exerted on cavity walls, it was concluded that the model with 1 mm radius was optimal for experimental optical 3D displacement analysis.",
publisher = "Trans Tech Publications Ltd, Durnten-Zurich",
journal = "Local Mechanical Properties Ix",
title = "Analysis of Composite Shrinkage Stresses on 3D Premolar Models with Different Cavity Design using Finite Element Method",
volume = "586",
pages = "202-+",
doi = "10.4028/www.scientific.net/KEM.586.202"
}

Milošević, M., Mitrović, N., Miletić, V., Tatić, U.,& Ezdenci, A.. (2014). Analysis of Composite Shrinkage Stresses on 3D Premolar Models with Different Cavity Design using Finite Element Method. in Local Mechanical Properties Ix
Trans Tech Publications Ltd, Durnten-Zurich., 586, 202-+.
https://doi.org/10.4028/www.scientific.net/KEM.586.202

Milošević M, Mitrović N, Miletić V, Tatić U, Ezdenci A. Analysis of Composite Shrinkage Stresses on 3D Premolar Models with Different Cavity Design using Finite Element Method. in Local Mechanical Properties Ix. 2014;586:202-+.
doi:10.4028/www.scientific.net/KEM.586.202 .

Milošević, Miloš, Mitrović, Nenad, Miletić, Vesna, Tatić, Uroš, Ezdenci, Andrea, "Analysis of Composite Shrinkage Stresses on 3D Premolar Models with Different Cavity Design using Finite Element Method" in Local Mechanical Properties Ix, 586 (2014):202-+,
https://doi.org/10.4028/www.scientific.net/KEM.586.202 . .

TY  - CONF
AU  - Milošević, M.
AU  - Mitrović, Nenad
AU  - Tanasić, Ivan
AU  - Ezdenci, Andrea
AU  - Tihaček-Šojić, Ljiljana
AU  - Maneski, Tasko
AU  - Colić, K.
PY  - 2011
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1646
PB  - Scientific Society for Mechanical Engineering
C3  - 28th Danubia - Adria - Symposium on Advances in Experimental Mechanics, DAS 2011
T1  - 3D strain analysis of restored lower jaw with total denture using optical measuring system
SP  - 101
EP  - 102
UR  - https://hdl.handle.net/21.15107/rcub_smile_1646
ER  - 

@conference{
author = "Milošević, M. and Mitrović, Nenad and Tanasić, Ivan and Ezdenci, Andrea and Tihaček-Šojić, Ljiljana and Maneski, Tasko and Colić, K.",
year = "2011",
publisher = "Scientific Society for Mechanical Engineering",
journal = "28th Danubia - Adria - Symposium on Advances in Experimental Mechanics, DAS 2011",
title = "3D strain analysis of restored lower jaw with total denture using optical measuring system",
pages = "101-102",
url = "https://hdl.handle.net/21.15107/rcub_smile_1646"
}

Milošević, M., Mitrović, N., Tanasić, I., Ezdenci, A., Tihaček-Šojić, L., Maneski, T.,& Colić, K.. (2011). 3D strain analysis of restored lower jaw with total denture using optical measuring system. in 28th Danubia - Adria - Symposium on Advances in Experimental Mechanics, DAS 2011
Scientific Society for Mechanical Engineering., 101-102.
https://hdl.handle.net/21.15107/rcub_smile_1646

Milošević M, Mitrović N, Tanasić I, Ezdenci A, Tihaček-Šojić L, Maneski T, Colić K. 3D strain analysis of restored lower jaw with total denture using optical measuring system. in 28th Danubia - Adria - Symposium on Advances in Experimental Mechanics, DAS 2011. 2011;:101-102.
https://hdl.handle.net/21.15107/rcub_smile_1646 .

Milošević, M., Mitrović, Nenad, Tanasić, Ivan, Ezdenci, Andrea, Tihaček-Šojić, Ljiljana, Maneski, Tasko, Colić, K., "3D strain analysis of restored lower jaw with total denture using optical measuring system" in 28th Danubia - Adria - Symposium on Advances in Experimental Mechanics, DAS 2011 (2011):101-102,
https://hdl.handle.net/21.15107/rcub_smile_1646 .