Influence of cavosurface angle on the stress concentration and gaps formation in class V resin composite restorations
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.jmbbm.2019.05.034 http://hdl.handle.net/11449/189165 |
Resumo: | The study aimed to evaluate the influence of cavosurface angle on stress concentration and gap formation in class V restorations. Cylindrical cavities 3 mm in diameter were prepared in forty-five bovine incisors, changing only the angle of the bur in relation to the flat surface of the tooth. The cavities maintained the same volume (17.67 mm³). The samples were divided according to the cavosurface angle, into three groups (n = 15): 90°, 120°, 135°. After adhesive application (Futurabond U, VOCO), the cavity was filled with bulk placement of a resin composite (GrandioSO, VOCO). The teeth were analyzed with stereomicroscopy. Data of marginal gap formation were statistically analyzed with a one-way analysis of variance (ANOVA) followed by Tukey tests (significance level: α = 0.05). Finite element analysis (FEA) was used to study residual stress in these geometries and to correlate those stresses with experimentally measured gap formation. The elastic modulus and polymerization shrinkage were determined for FEA. Residual shrinkage stresses were expressed in maximum principal stress (MPS). There was a significant difference in the gap formation among the groups (p = 0.001). A significantly lower marginal gap formation was found for 120° and 135° angles, with no significant difference between them. The cavosurface angle at 90° caused substantially higher stresses, in the restoration interface, with greater marginal gap. For the 120° and 135° angles, the stress concentrations were smaller and were located in the dental structure. The cavosurface angle influenced the marginal gap formation and stress concentration. |
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Influence of cavosurface angle on the stress concentration and gaps formation in class V resin composite restorationsCervical lesionComposite resinsDental marginal adaptationFinite element analysisResidual stressThe study aimed to evaluate the influence of cavosurface angle on stress concentration and gap formation in class V restorations. Cylindrical cavities 3 mm in diameter were prepared in forty-five bovine incisors, changing only the angle of the bur in relation to the flat surface of the tooth. The cavities maintained the same volume (17.67 mm³). The samples were divided according to the cavosurface angle, into three groups (n = 15): 90°, 120°, 135°. After adhesive application (Futurabond U, VOCO), the cavity was filled with bulk placement of a resin composite (GrandioSO, VOCO). The teeth were analyzed with stereomicroscopy. Data of marginal gap formation were statistically analyzed with a one-way analysis of variance (ANOVA) followed by Tukey tests (significance level: α = 0.05). Finite element analysis (FEA) was used to study residual stress in these geometries and to correlate those stresses with experimentally measured gap formation. The elastic modulus and polymerization shrinkage were determined for FEA. Residual shrinkage stresses were expressed in maximum principal stress (MPS). There was a significant difference in the gap formation among the groups (p = 0.001). A significantly lower marginal gap formation was found for 120° and 135° angles, with no significant difference between them. The cavosurface angle at 90° caused substantially higher stresses, in the restoration interface, with greater marginal gap. For the 120° and 135° angles, the stress concentrations were smaller and were located in the dental structure. The cavosurface angle influenced the marginal gap formation and stress concentration.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Department of Restorative Dentistry São Paulo State University - UNESP Institute of Science and Technology, São José dos CamposDepartment of Biomedical and Applied Sciences Division of Dental Biomaterials Indiana University School of Dentistry (IUSD)Department of Dental Materials and Prosthodontics São Paulo State University - UNESP Institute of Science and Technology, São José dos CamposDepartment of Restorative Dentistry São Paulo State University - UNESP Institute of Science and Technology, São José dos CamposDepartment of Dental Materials and Prosthodontics São Paulo State University - UNESP Institute of Science and Technology, São José dos CamposCNPq: 30764Universidade Estadual Paulista (Unesp)Indiana University School of Dentistry (IUSD)Correia, Ayla Macyelle de Oliveira [UNESP]Pereira, Victoria Elisa Maciel [UNESP]Bresciani, Eduardo [UNESP]Platt, Jeffrey A.Borges, Alexandre Luiz Souto [UNESP]Caneppele, Taciana Marco Ferraz [UNESP]2019-10-06T16:31:49Z2019-10-06T16:31:49Z2019-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article272-277http://dx.doi.org/10.1016/j.jmbbm.2019.05.034Journal of the Mechanical Behavior of Biomedical Materials, v. 97, p. 272-277.1878-01801751-6161http://hdl.handle.net/11449/18916510.1016/j.jmbbm.2019.05.0342-s2.0-85066122523Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of the Mechanical Behavior of Biomedical Materialsinfo:eu-repo/semantics/openAccess2021-10-23T19:28:29Zoai:repositorio.unesp.br:11449/189165Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:05:10.435369Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Influence of cavosurface angle on the stress concentration and gaps formation in class V resin composite restorations |
title |
Influence of cavosurface angle on the stress concentration and gaps formation in class V resin composite restorations |
spellingShingle |
Influence of cavosurface angle on the stress concentration and gaps formation in class V resin composite restorations Correia, Ayla Macyelle de Oliveira [UNESP] Cervical lesion Composite resins Dental marginal adaptation Finite element analysis Residual stress |
title_short |
Influence of cavosurface angle on the stress concentration and gaps formation in class V resin composite restorations |
title_full |
Influence of cavosurface angle on the stress concentration and gaps formation in class V resin composite restorations |
title_fullStr |
Influence of cavosurface angle on the stress concentration and gaps formation in class V resin composite restorations |
title_full_unstemmed |
Influence of cavosurface angle on the stress concentration and gaps formation in class V resin composite restorations |
title_sort |
Influence of cavosurface angle on the stress concentration and gaps formation in class V resin composite restorations |
author |
Correia, Ayla Macyelle de Oliveira [UNESP] |
author_facet |
Correia, Ayla Macyelle de Oliveira [UNESP] Pereira, Victoria Elisa Maciel [UNESP] Bresciani, Eduardo [UNESP] Platt, Jeffrey A. Borges, Alexandre Luiz Souto [UNESP] Caneppele, Taciana Marco Ferraz [UNESP] |
author_role |
author |
author2 |
Pereira, Victoria Elisa Maciel [UNESP] Bresciani, Eduardo [UNESP] Platt, Jeffrey A. Borges, Alexandre Luiz Souto [UNESP] Caneppele, Taciana Marco Ferraz [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Indiana University School of Dentistry (IUSD) |
dc.contributor.author.fl_str_mv |
Correia, Ayla Macyelle de Oliveira [UNESP] Pereira, Victoria Elisa Maciel [UNESP] Bresciani, Eduardo [UNESP] Platt, Jeffrey A. Borges, Alexandre Luiz Souto [UNESP] Caneppele, Taciana Marco Ferraz [UNESP] |
dc.subject.por.fl_str_mv |
Cervical lesion Composite resins Dental marginal adaptation Finite element analysis Residual stress |
topic |
Cervical lesion Composite resins Dental marginal adaptation Finite element analysis Residual stress |
description |
The study aimed to evaluate the influence of cavosurface angle on stress concentration and gap formation in class V restorations. Cylindrical cavities 3 mm in diameter were prepared in forty-five bovine incisors, changing only the angle of the bur in relation to the flat surface of the tooth. The cavities maintained the same volume (17.67 mm³). The samples were divided according to the cavosurface angle, into three groups (n = 15): 90°, 120°, 135°. After adhesive application (Futurabond U, VOCO), the cavity was filled with bulk placement of a resin composite (GrandioSO, VOCO). The teeth were analyzed with stereomicroscopy. Data of marginal gap formation were statistically analyzed with a one-way analysis of variance (ANOVA) followed by Tukey tests (significance level: α = 0.05). Finite element analysis (FEA) was used to study residual stress in these geometries and to correlate those stresses with experimentally measured gap formation. The elastic modulus and polymerization shrinkage were determined for FEA. Residual shrinkage stresses were expressed in maximum principal stress (MPS). There was a significant difference in the gap formation among the groups (p = 0.001). A significantly lower marginal gap formation was found for 120° and 135° angles, with no significant difference between them. The cavosurface angle at 90° caused substantially higher stresses, in the restoration interface, with greater marginal gap. For the 120° and 135° angles, the stress concentrations were smaller and were located in the dental structure. The cavosurface angle influenced the marginal gap formation and stress concentration. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-06T16:31:49Z 2019-10-06T16:31:49Z 2019-09-01 |
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/10.1016/j.jmbbm.2019.05.034 Journal of the Mechanical Behavior of Biomedical Materials, v. 97, p. 272-277. 1878-0180 1751-6161 http://hdl.handle.net/11449/189165 10.1016/j.jmbbm.2019.05.034 2-s2.0-85066122523 |
url |
http://dx.doi.org/10.1016/j.jmbbm.2019.05.034 http://hdl.handle.net/11449/189165 |
identifier_str_mv |
Journal of the Mechanical Behavior of Biomedical Materials, v. 97, p. 272-277. 1878-0180 1751-6161 10.1016/j.jmbbm.2019.05.034 2-s2.0-85066122523 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of the Mechanical Behavior of Biomedical Materials |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
272-277 |
dc.source.none.fl_str_mv |
Scopus 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 |
|
_version_ |
1808128457076375552 |