TY  - JOUR
AU  - Miletić, Vesna
AU  - Manojlović, Dragica
AU  - Milošević, Miloš
AU  - Mitrović, Nenad
AU  - Savić-Sikoparija, Tatjana
AU  - Maneski, Tasko
PY  - 2011
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1634
AB  - Objective: To analyze local shrinkage patterns in terms of surface shrinkage strains and z-axis displacements in a novel self-adhering composite and a conventional flowable composite using three-dimensional digital image correlation. Method and Materials: Seven samples of each material were prepared in cylindrical Teflon molds 5 mm in diameter and 2 mm thick. The surface of the composites facing the cameras was sprayed with a fine layer of black paint. The unsprayed surface of each sample, opposite the one facing the cameras, was light cured for 40 seconds using a light-emitting diode unit. Digital images were taken immediately before and after light curing. Shrinkage was calculated as von Mises strains, and z-axis displacements were measured in microns. The data were statistically analyzed using two-way ANOVA at alpha = .05. Results: No significant difference in strain was observed between the two materials (P > .05). Strain distribution was nonhomogenous-the outer segments showed significantly higher strains than central parts in each material (P  lt  .05). The opposite was observed for z-axis displacements-significantly greater displacements were found in central parts compared to the outer segments (P  lt  .05). Conclusion: Different shrinkage vectors across the surface of the tested flowable composites showed predominant in-plane shrinkage of the outer surface segments and out-of-plane shrinkage of the inner segments. These complex local deformation patterns in composite materials indicate zones of different types of forces exerted on the tooth-restoration interface in situ. (Quintessence Int 2011;42:797-804)
T2  - Quintessence International
T1  - Analysis of local shrinkage patterns of self-adhering and flowable composites using 3D digital image correlation
VL  - 42
IS  - 9
SP  - 797
EP  - 804
UR  - https://hdl.handle.net/21.15107/rcub_smile_1634
ER  - 

@article{
author = "Miletić, Vesna and Manojlović, Dragica and Milošević, Miloš and Mitrović, Nenad and Savić-Sikoparija, Tatjana and Maneski, Tasko",
year = "2011",
abstract = "Objective: To analyze local shrinkage patterns in terms of surface shrinkage strains and z-axis displacements in a novel self-adhering composite and a conventional flowable composite using three-dimensional digital image correlation. Method and Materials: Seven samples of each material were prepared in cylindrical Teflon molds 5 mm in diameter and 2 mm thick. The surface of the composites facing the cameras was sprayed with a fine layer of black paint. The unsprayed surface of each sample, opposite the one facing the cameras, was light cured for 40 seconds using a light-emitting diode unit. Digital images were taken immediately before and after light curing. Shrinkage was calculated as von Mises strains, and z-axis displacements were measured in microns. The data were statistically analyzed using two-way ANOVA at alpha = .05. Results: No significant difference in strain was observed between the two materials (P > .05). Strain distribution was nonhomogenous-the outer segments showed significantly higher strains than central parts in each material (P  lt  .05). The opposite was observed for z-axis displacements-significantly greater displacements were found in central parts compared to the outer segments (P  lt  .05). Conclusion: Different shrinkage vectors across the surface of the tested flowable composites showed predominant in-plane shrinkage of the outer surface segments and out-of-plane shrinkage of the inner segments. These complex local deformation patterns in composite materials indicate zones of different types of forces exerted on the tooth-restoration interface in situ. (Quintessence Int 2011;42:797-804)",
journal = "Quintessence International",
title = "Analysis of local shrinkage patterns of self-adhering and flowable composites using 3D digital image correlation",
volume = "42",
number = "9",
pages = "797-804",
url = "https://hdl.handle.net/21.15107/rcub_smile_1634"
}

Miletić, V., Manojlović, D., Milošević, M., Mitrović, N., Savić-Sikoparija, T.,& Maneski, T.. (2011). Analysis of local shrinkage patterns of self-adhering and flowable composites using 3D digital image correlation. in Quintessence International, 42(9), 797-804.
https://hdl.handle.net/21.15107/rcub_smile_1634

Miletić V, Manojlović D, Milošević M, Mitrović N, Savić-Sikoparija T, Maneski T. Analysis of local shrinkage patterns of self-adhering and flowable composites using 3D digital image correlation. in Quintessence International. 2011;42(9):797-804.
https://hdl.handle.net/21.15107/rcub_smile_1634 .

Miletić, Vesna, Manojlović, Dragica, Milošević, Miloš, Mitrović, Nenad, Savić-Sikoparija, Tatjana, Maneski, Tasko, "Analysis of local shrinkage patterns of self-adhering and flowable composites using 3D digital image correlation" in Quintessence International, 42, no. 9 (2011):797-804,
https://hdl.handle.net/21.15107/rcub_smile_1634 .

TY  - JOUR
AU  - Milošević, Miloš
AU  - Miletić, Vesna
AU  - Mitrović, Nenad
AU  - Manojlović, Dragica
AU  - Savić-Sikoparija, Tatjana
AU  - Maneski, Tasko
PY  - 2011
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1606
AB  - Polymerization shrinkage is the single most important local deformation of dental composites that has a substantial effect on the quality of the tooth-restoration interface in clinical conditions. The aim of this study was to investigate the possibility to analyze local deformation fields of a dental composite upon polymerization using the 3D optical method of digital image correlation with two cameras. Conventional, microhybrid composite samples were prepared in custom-made Teflon molds and polymerized with a conventional halogen light. Local deformation fields were determined using the two-camera system, Aramis 2M, by correlating sample dimensions before and after polymerization. The greatest deformations of up to 6 % with the average of 3.5 % were observed along the periphery of the samples in contrast to substantially lower deformations of about 1-1.5% in the central parts. Polymerization of dental composites yields heterogeneous deformation with variations in shrinkage values. The 3D optical system is a promising tool enabling qualitative and quantitative mapping of local deformation fields in dental composites.
PB  - Chemicke Listy, Prague 6
T2  - Chemicke Listy
T1  - Measurement of local deformation fields in dental composites using 3d optical system
VL  - 105
SP  - S751
EP  - S753
UR  - https://hdl.handle.net/21.15107/rcub_smile_1606
ER  - 

@article{
author = "Milošević, Miloš and Miletić, Vesna and Mitrović, Nenad and Manojlović, Dragica and Savić-Sikoparija, Tatjana and Maneski, Tasko",
year = "2011",
abstract = "Polymerization shrinkage is the single most important local deformation of dental composites that has a substantial effect on the quality of the tooth-restoration interface in clinical conditions. The aim of this study was to investigate the possibility to analyze local deformation fields of a dental composite upon polymerization using the 3D optical method of digital image correlation with two cameras. Conventional, microhybrid composite samples were prepared in custom-made Teflon molds and polymerized with a conventional halogen light. Local deformation fields were determined using the two-camera system, Aramis 2M, by correlating sample dimensions before and after polymerization. The greatest deformations of up to 6 % with the average of 3.5 % were observed along the periphery of the samples in contrast to substantially lower deformations of about 1-1.5% in the central parts. Polymerization of dental composites yields heterogeneous deformation with variations in shrinkage values. The 3D optical system is a promising tool enabling qualitative and quantitative mapping of local deformation fields in dental composites.",
publisher = "Chemicke Listy, Prague 6",
journal = "Chemicke Listy",
title = "Measurement of local deformation fields in dental composites using 3d optical system",
volume = "105",
pages = "S751-S753",
url = "https://hdl.handle.net/21.15107/rcub_smile_1606"
}

Milošević, M., Miletić, V., Mitrović, N., Manojlović, D., Savić-Sikoparija, T.,& Maneski, T.. (2011). Measurement of local deformation fields in dental composites using 3d optical system. in Chemicke Listy
Chemicke Listy, Prague 6., 105, S751-S753.
https://hdl.handle.net/21.15107/rcub_smile_1606

Milošević M, Miletić V, Mitrović N, Manojlović D, Savić-Sikoparija T, Maneski T. Measurement of local deformation fields in dental composites using 3d optical system. in Chemicke Listy. 2011;105:S751-S753.
https://hdl.handle.net/21.15107/rcub_smile_1606 .

Milošević, Miloš, Miletić, Vesna, Mitrović, Nenad, Manojlović, Dragica, Savić-Sikoparija, Tatjana, Maneski, Tasko, "Measurement of local deformation fields in dental composites using 3d optical system" in Chemicke Listy, 105 (2011):S751-S753,
https://hdl.handle.net/21.15107/rcub_smile_1606 .