Impact of Quantity of Resin, C-factor, and Geometry on Resin Composite Polymerization Shrinkage Stress in Class V Restorations
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.2341/12-440-L http://hdl.handle.net/11449/112973 |
Resumo: | Objective: This study evaluated the effect of quantity of resin composite, C-factor, and geometry in Class V restorations on shrinkage stress after bulk fill insertion of resin using two-dimensional finite element analysis.Methods: An image of a buccolingual longitudinal plane in the middle of an upper first premolar and supporting tissues was used for modeling 10 groups: cylindrical cavity, erosion, and abfraction lesions with the same C-factor (1.57), a second cylindrical cavity and abfraction lesion with the same quantity of resin (QR) as the erosion lesion, and then all repeated with a bevel on the occlusal cavosurface angle. The 10 groups were imported into Ansys 13.0 for two-dimensional finite element analysis. The mesh was built with 30,000 triangle and square elements of 0.1 mm in length for all the models. All materials were considered isotropic, homogeneous, elastic, and linear, and the resin composite shrinkage was simulated by thermal analogy. The maximum principal (MPS) and von Mises stresses (VMS) were analyzed for comparing the behavior of the groups.Results: Different values of angles for the cavosurface margin in enamel and dentin were obtained for all groups and the higher the angle, the lower the stress concentration. When the groups with the same C-factor and QR were compared, the erosion shape cavity showed the highest MPS and VMS values, and abfraction shape, the lowest. A cavosurface bevel decreased the stress values on the occlusal margin. The geometry factor overcame the effects of C-factor and QR in some situations.Conclusion: Within the limitations of the current methodology, it is possible to conclude that the combination of all variables studied influences the stress, but the geometry is the most important factor to be considered by the operator. |
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Impact of Quantity of Resin, C-factor, and Geometry on Resin Composite Polymerization Shrinkage Stress in Class V RestorationsObjective: This study evaluated the effect of quantity of resin composite, C-factor, and geometry in Class V restorations on shrinkage stress after bulk fill insertion of resin using two-dimensional finite element analysis.Methods: An image of a buccolingual longitudinal plane in the middle of an upper first premolar and supporting tissues was used for modeling 10 groups: cylindrical cavity, erosion, and abfraction lesions with the same C-factor (1.57), a second cylindrical cavity and abfraction lesion with the same quantity of resin (QR) as the erosion lesion, and then all repeated with a bevel on the occlusal cavosurface angle. The 10 groups were imported into Ansys 13.0 for two-dimensional finite element analysis. The mesh was built with 30,000 triangle and square elements of 0.1 mm in length for all the models. All materials were considered isotropic, homogeneous, elastic, and linear, and the resin composite shrinkage was simulated by thermal analogy. The maximum principal (MPS) and von Mises stresses (VMS) were analyzed for comparing the behavior of the groups.Results: Different values of angles for the cavosurface margin in enamel and dentin were obtained for all groups and the higher the angle, the lower the stress concentration. When the groups with the same C-factor and QR were compared, the erosion shape cavity showed the highest MPS and VMS values, and abfraction shape, the lowest. A cavosurface bevel decreased the stress values on the occlusal margin. The geometry factor overcame the effects of C-factor and QR in some situations.Conclusion: Within the limitations of the current methodology, it is possible to conclude that the combination of all variables studied influences the stress, but the geometry is the most important factor to be considered by the operator.Univ Estadual Paulista, UNESP, Dept Dent Mat & Prosthodont, Sao Jose dos Campos Dent Sch, Sao Jose Dos Campos, SP, BrazilUniv Estadual Paulista, UNESP, Dept Restorat Dent, Sao Jose dos Campos Dent Sch, Sao Jose Dos Campos, SP, BrazilUniv Sao Paulo, Dept Dent Mat, Sch Dent, Sao Paulo, BrazilIndiana Univ, Dept Restorat Dent, Indianapolis, IN 46204 USAUniv Estadual Paulista, UNESP, Dept Dent Mat & Prosthodont, Sao Jose dos Campos Dent Sch, Sao Jose Dos Campos, SP, BrazilUniv Estadual Paulista, UNESP, Dept Restorat Dent, Sao Jose dos Campos Dent Sch, Sao Jose Dos Campos, SP, BrazilOperative Dentistry IncUniversidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Indiana UniversityBorges, A. L. S. [UNESP]Borges, A. B. [UNESP]Xavier, T. A.Bottino, M. C.Platt, J. A.2014-12-03T13:11:12Z2014-12-03T13:11:12Z2014-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article144-151application/pdfhttp://dx.doi.org/10.2341/12-440-LOperative Dentistry. Indianapolis: Operative Dentistry Inc, v. 39, n. 2, p. 144-151, 2014.0361-7734http://hdl.handle.net/11449/11297310.2341/12-440-LWOS:000332906100006WOS000332906100006.pdf604345930417601569604700530379050000-0002-5707-7565Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengOperative Dentistry2.1301,180info:eu-repo/semantics/openAccess2023-10-01T06:01:00Zoai:repositorio.unesp.br:11449/112973Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T13:38:02.639029Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Impact of Quantity of Resin, C-factor, and Geometry on Resin Composite Polymerization Shrinkage Stress in Class V Restorations |
title |
Impact of Quantity of Resin, C-factor, and Geometry on Resin Composite Polymerization Shrinkage Stress in Class V Restorations |
spellingShingle |
Impact of Quantity of Resin, C-factor, and Geometry on Resin Composite Polymerization Shrinkage Stress in Class V Restorations Borges, A. L. S. [UNESP] |
title_short |
Impact of Quantity of Resin, C-factor, and Geometry on Resin Composite Polymerization Shrinkage Stress in Class V Restorations |
title_full |
Impact of Quantity of Resin, C-factor, and Geometry on Resin Composite Polymerization Shrinkage Stress in Class V Restorations |
title_fullStr |
Impact of Quantity of Resin, C-factor, and Geometry on Resin Composite Polymerization Shrinkage Stress in Class V Restorations |
title_full_unstemmed |
Impact of Quantity of Resin, C-factor, and Geometry on Resin Composite Polymerization Shrinkage Stress in Class V Restorations |
title_sort |
Impact of Quantity of Resin, C-factor, and Geometry on Resin Composite Polymerization Shrinkage Stress in Class V Restorations |
author |
Borges, A. L. S. [UNESP] |
author_facet |
Borges, A. L. S. [UNESP] Borges, A. B. [UNESP] Xavier, T. A. Bottino, M. C. Platt, J. A. |
author_role |
author |
author2 |
Borges, A. B. [UNESP] Xavier, T. A. Bottino, M. C. Platt, J. A. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade de São Paulo (USP) Indiana University |
dc.contributor.author.fl_str_mv |
Borges, A. L. S. [UNESP] Borges, A. B. [UNESP] Xavier, T. A. Bottino, M. C. Platt, J. A. |
description |
Objective: This study evaluated the effect of quantity of resin composite, C-factor, and geometry in Class V restorations on shrinkage stress after bulk fill insertion of resin using two-dimensional finite element analysis.Methods: An image of a buccolingual longitudinal plane in the middle of an upper first premolar and supporting tissues was used for modeling 10 groups: cylindrical cavity, erosion, and abfraction lesions with the same C-factor (1.57), a second cylindrical cavity and abfraction lesion with the same quantity of resin (QR) as the erosion lesion, and then all repeated with a bevel on the occlusal cavosurface angle. The 10 groups were imported into Ansys 13.0 for two-dimensional finite element analysis. The mesh was built with 30,000 triangle and square elements of 0.1 mm in length for all the models. All materials were considered isotropic, homogeneous, elastic, and linear, and the resin composite shrinkage was simulated by thermal analogy. The maximum principal (MPS) and von Mises stresses (VMS) were analyzed for comparing the behavior of the groups.Results: Different values of angles for the cavosurface margin in enamel and dentin were obtained for all groups and the higher the angle, the lower the stress concentration. When the groups with the same C-factor and QR were compared, the erosion shape cavity showed the highest MPS and VMS values, and abfraction shape, the lowest. A cavosurface bevel decreased the stress values on the occlusal margin. The geometry factor overcame the effects of C-factor and QR in some situations.Conclusion: Within the limitations of the current methodology, it is possible to conclude that the combination of all variables studied influences the stress, but the geometry is the most important factor to be considered by the operator. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-12-03T13:11:12Z 2014-12-03T13:11:12Z 2014-03-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.2341/12-440-L Operative Dentistry. Indianapolis: Operative Dentistry Inc, v. 39, n. 2, p. 144-151, 2014. 0361-7734 http://hdl.handle.net/11449/112973 10.2341/12-440-L WOS:000332906100006 WOS000332906100006.pdf 6043459304176015 6960470053037905 0000-0002-5707-7565 |
url |
http://dx.doi.org/10.2341/12-440-L http://hdl.handle.net/11449/112973 |
identifier_str_mv |
Operative Dentistry. Indianapolis: Operative Dentistry Inc, v. 39, n. 2, p. 144-151, 2014. 0361-7734 10.2341/12-440-L WOS:000332906100006 WOS000332906100006.pdf 6043459304176015 6960470053037905 0000-0002-5707-7565 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Operative Dentistry 2.130 1,180 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
144-151 application/pdf |
dc.publisher.none.fl_str_mv |
Operative Dentistry Inc |
publisher.none.fl_str_mv |
Operative Dentistry Inc |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808128255676383232 |