Fatigue behavior and stress distribution of molars restored with MOD inlays with and without deep margin elevation
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s00784-021-04219-6 http://hdl.handle.net/11449/233664 |
Resumo: | Objectives: This study evaluated the effect of deep margin elevation (DME) and restorative materials (leucite-reinforced glass–ceramics [C] vs. indirect resin composite [R]) on the fatigue behavior and stress distribution of maxillary molars with 2-mm deep proximal margins restored with MOD inlay. Methods: Fifty-two extracted human third molars were randomly assigned into four groups (n = 13): C; DME + C; R; and DME + R. Inlays were fabricated in CAD-CAM and bonded to all teeth. The fatigue behavior was assessed with the stepwise stress test (10,000 cycles/step; step = 50 N; 20 Hz; initial load = 200 N). Fatigue failure loads and the number of cycles were analyzed with 2-way ANOVA and Tukey’s test (p < 0.05) and Kaplan–Meier survival plots. The stress distribution was assessed with finite element analysis. The models were considered isotropic, linear, and homogeneous, and presented bonded contacts. A tripod axial load (400 N) was applied to the occlusal surface. The stress distribution was analyzed with the maximum principal stress criterion. Results: For fatigue, there was no difference for DME factor (p > 0.05). For the material factor, the load and number of cycles for failure were statistically higher in the R groups (p < 0.05). The finite element analysis showed that resin composite inlays concentrated more stress in the tooth structure, while ceramic inlays concentrated more stress in the restoration. Non-reparable failures were more frequent in the resin composite inlays groups. Conclusions: DME was not negative for fatigue and biomechanical behaviors. Resin composite inlays were more resistant to the fatigue test, although the failure mode was more aggressive. Clinical significance: DME does not impair mechanical behavior. Resin composite inlays failed at higher loads but with a more aggressive failure mode. |
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Fatigue behavior and stress distribution of molars restored with MOD inlays with and without deep margin elevationComposite resinsDental porcelainDental restoration failureFatigue fracturesFinite element analysisInlaysObjectives: This study evaluated the effect of deep margin elevation (DME) and restorative materials (leucite-reinforced glass–ceramics [C] vs. indirect resin composite [R]) on the fatigue behavior and stress distribution of maxillary molars with 2-mm deep proximal margins restored with MOD inlay. Methods: Fifty-two extracted human third molars were randomly assigned into four groups (n = 13): C; DME + C; R; and DME + R. Inlays were fabricated in CAD-CAM and bonded to all teeth. The fatigue behavior was assessed with the stepwise stress test (10,000 cycles/step; step = 50 N; 20 Hz; initial load = 200 N). Fatigue failure loads and the number of cycles were analyzed with 2-way ANOVA and Tukey’s test (p < 0.05) and Kaplan–Meier survival plots. The stress distribution was assessed with finite element analysis. The models were considered isotropic, linear, and homogeneous, and presented bonded contacts. A tripod axial load (400 N) was applied to the occlusal surface. The stress distribution was analyzed with the maximum principal stress criterion. Results: For fatigue, there was no difference for DME factor (p > 0.05). For the material factor, the load and number of cycles for failure were statistically higher in the R groups (p < 0.05). The finite element analysis showed that resin composite inlays concentrated more stress in the tooth structure, while ceramic inlays concentrated more stress in the restoration. Non-reparable failures were more frequent in the resin composite inlays groups. Conclusions: DME was not negative for fatigue and biomechanical behaviors. Resin composite inlays were more resistant to the fatigue test, although the failure mode was more aggressive. Clinical significance: DME does not impair mechanical behavior. Resin composite inlays failed at higher loads but with a more aggressive failure mode.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Department of Dental Materials and Prosthodontics Institute of Science and Technology São Paulo State University (Unesp), 777th Eng. Francisco José Longo Av., SPPost-Graduate Program in Dentistry University of Taubaté (UNITAU), 09th Rua Dos Operários St., SPGraduate Program of Oral Science Prosthodontics Unit School of Dentistry Federal University of Santa Maria (UFSM) Roraima Av, RSSchool of Dentistry São Francisco University (USF), 218th São Francisco de Assis Av., SPDepartment of Restorative Dentistry Institute of Science and Technology São Paulo State University (Unesp), 777th Eng. Francisco José Longo Av., SPDepartment of Dental Materials and Prosthodontics Institute of Science and Technology São Paulo State University (Unesp), 777th Eng. Francisco José Longo Av., SPDepartment of Restorative Dentistry Institute of Science and Technology São Paulo State University (Unesp), 777th Eng. Francisco José Longo Av., SPUniversidade Estadual Paulista (UNESP)University of Taubaté (UNITAU)Universidade Federal de Sergipe (UFS)São Francisco University (USF)Grassi, Elisa Donaria Aboucauch [UNESP]de Andrade, Guilherme Schmitt [UNESP]Tribst, João Paulo MendesMachry, Renan VazValandro, Luiz FelipeRamos, Nathalia de CarvalhoBresciani, Eduardo [UNESP]Saavedra, Guilherme de Siqueira Ferreira Anzaloni [UNESP]2022-05-01T09:31:21Z2022-05-01T09:31:21Z2022-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article2513-2526http://dx.doi.org/10.1007/s00784-021-04219-6Clinical Oral Investigations, v. 26, n. 3, p. 2513-2526, 2022.1436-37711432-6981http://hdl.handle.net/11449/23366410.1007/s00784-021-04219-62-s2.0-85116978994Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengClinical Oral Investigationsinfo:eu-repo/semantics/openAccess2022-05-01T09:31:21Zoai:repositorio.unesp.br:11449/233664Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-05-01T09:31:21Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Fatigue behavior and stress distribution of molars restored with MOD inlays with and without deep margin elevation |
title |
Fatigue behavior and stress distribution of molars restored with MOD inlays with and without deep margin elevation |
spellingShingle |
Fatigue behavior and stress distribution of molars restored with MOD inlays with and without deep margin elevation Grassi, Elisa Donaria Aboucauch [UNESP] Composite resins Dental porcelain Dental restoration failure Fatigue fractures Finite element analysis Inlays |
title_short |
Fatigue behavior and stress distribution of molars restored with MOD inlays with and without deep margin elevation |
title_full |
Fatigue behavior and stress distribution of molars restored with MOD inlays with and without deep margin elevation |
title_fullStr |
Fatigue behavior and stress distribution of molars restored with MOD inlays with and without deep margin elevation |
title_full_unstemmed |
Fatigue behavior and stress distribution of molars restored with MOD inlays with and without deep margin elevation |
title_sort |
Fatigue behavior and stress distribution of molars restored with MOD inlays with and without deep margin elevation |
author |
Grassi, Elisa Donaria Aboucauch [UNESP] |
author_facet |
Grassi, Elisa Donaria Aboucauch [UNESP] de Andrade, Guilherme Schmitt [UNESP] Tribst, João Paulo Mendes Machry, Renan Vaz Valandro, Luiz Felipe Ramos, Nathalia de Carvalho Bresciani, Eduardo [UNESP] Saavedra, Guilherme de Siqueira Ferreira Anzaloni [UNESP] |
author_role |
author |
author2 |
de Andrade, Guilherme Schmitt [UNESP] Tribst, João Paulo Mendes Machry, Renan Vaz Valandro, Luiz Felipe Ramos, Nathalia de Carvalho Bresciani, Eduardo [UNESP] Saavedra, Guilherme de Siqueira Ferreira Anzaloni [UNESP] |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) University of Taubaté (UNITAU) Universidade Federal de Sergipe (UFS) São Francisco University (USF) |
dc.contributor.author.fl_str_mv |
Grassi, Elisa Donaria Aboucauch [UNESP] de Andrade, Guilherme Schmitt [UNESP] Tribst, João Paulo Mendes Machry, Renan Vaz Valandro, Luiz Felipe Ramos, Nathalia de Carvalho Bresciani, Eduardo [UNESP] Saavedra, Guilherme de Siqueira Ferreira Anzaloni [UNESP] |
dc.subject.por.fl_str_mv |
Composite resins Dental porcelain Dental restoration failure Fatigue fractures Finite element analysis Inlays |
topic |
Composite resins Dental porcelain Dental restoration failure Fatigue fractures Finite element analysis Inlays |
description |
Objectives: This study evaluated the effect of deep margin elevation (DME) and restorative materials (leucite-reinforced glass–ceramics [C] vs. indirect resin composite [R]) on the fatigue behavior and stress distribution of maxillary molars with 2-mm deep proximal margins restored with MOD inlay. Methods: Fifty-two extracted human third molars were randomly assigned into four groups (n = 13): C; DME + C; R; and DME + R. Inlays were fabricated in CAD-CAM and bonded to all teeth. The fatigue behavior was assessed with the stepwise stress test (10,000 cycles/step; step = 50 N; 20 Hz; initial load = 200 N). Fatigue failure loads and the number of cycles were analyzed with 2-way ANOVA and Tukey’s test (p < 0.05) and Kaplan–Meier survival plots. The stress distribution was assessed with finite element analysis. The models were considered isotropic, linear, and homogeneous, and presented bonded contacts. A tripod axial load (400 N) was applied to the occlusal surface. The stress distribution was analyzed with the maximum principal stress criterion. Results: For fatigue, there was no difference for DME factor (p > 0.05). For the material factor, the load and number of cycles for failure were statistically higher in the R groups (p < 0.05). The finite element analysis showed that resin composite inlays concentrated more stress in the tooth structure, while ceramic inlays concentrated more stress in the restoration. Non-reparable failures were more frequent in the resin composite inlays groups. Conclusions: DME was not negative for fatigue and biomechanical behaviors. Resin composite inlays were more resistant to the fatigue test, although the failure mode was more aggressive. Clinical significance: DME does not impair mechanical behavior. Resin composite inlays failed at higher loads but with a more aggressive failure mode. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-05-01T09:31:21Z 2022-05-01T09:31:21Z 2022-03-01 |
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/10.1007/s00784-021-04219-6 Clinical Oral Investigations, v. 26, n. 3, p. 2513-2526, 2022. 1436-3771 1432-6981 http://hdl.handle.net/11449/233664 10.1007/s00784-021-04219-6 2-s2.0-85116978994 |
url |
http://dx.doi.org/10.1007/s00784-021-04219-6 http://hdl.handle.net/11449/233664 |
identifier_str_mv |
Clinical Oral Investigations, v. 26, n. 3, p. 2513-2526, 2022. 1436-3771 1432-6981 10.1007/s00784-021-04219-6 2-s2.0-85116978994 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Clinical Oral Investigations |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
2513-2526 |
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_ |
1797789274705231872 |