Does overlay preparation design affect polymerization shrinkage stress distribution? A 3D FEA study

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversity of Taubaté (UNITAU)-
Autor(es): dc.contributorPrivate Practice-
Autor(es): dc.creatorde Andrade, Guilherme Schmitt [UNESP]-
Autor(es): dc.creatorPinto, Alana Barbosa Alves [UNESP]-
Autor(es): dc.creatorTribst, João Paulo Mendes-
Autor(es): dc.creatorChun, Eliseo Pablo-
Autor(es): dc.creatorBorges, Alexandre Luiz Souto [UNESP]-
Autor(es): dc.creatorde Siqueira Ferreira Anzaloni Saavedra, Guilherme [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:53:04Z-
Data de disponibilização: dc.date.available2022-02-22T00:53:04Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2019-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1080/10255842.2020.1866561-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/208312-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/208312-
Descrição: dc.descriptionThis study evaluated the polymerization shrinkage stress of three tooth preparation designs for indirect ceramic overlay by finite element analysis: isthmus preparation (IST); without isthmus preparation (wIST); and non-retentive preparation (nRET). The models were created based in prepared dental typodonts and were digitally impressed with an intraoral scanner. The interfaces in all models were considered perfectly bonded and all materials were considered homogeneous, linear, and isotropic. The polymerization shrinkage of the cement layer (100 µm) was simulated and evaluated by maximum principal stress criteria. The stress peaks followed this sequence: restoration = IST (13.4 MPa) > wIST (9.3 MPa) > nRET (9 MPa); cement layer = IST (16.9 MPa) > wIST (12.6 MPa) > nRET (10-7.5 MPa); and teeth = IST (10.7 MPa) > wIST (10.5 MPa) > (9 MPa). For the cement layer, the non-retentive preparation (nRET) had the lowest shrinkage stress from all the groups, obtaining a more homogeneous stress distribution on the cement surface. Regarding the abutment teeth, the IST generated a higher shrinkage stress area on the dental structure, concentrating higher stress magnitude at the axiopulpar and axiogingival angles. Non-retentive preparation seems to reduce polymerization shrinkage stress.-
Descrição: dc.descriptionDepartment of Dental Materials and Prosthodontics Institute of Science and Technology São Paulo State University (UNESP)-
Descrição: dc.descriptionDepartament of Dentistry Postgraduate Program in Dentistry University of Taubaté (UNITAU)-
Descrição: dc.descriptionPrivate Practice-
Descrição: dc.descriptionDepartment of Dental Materials and Prosthodontics Institute of Science and Technology São Paulo State University (UNESP)-
Idioma: dc.languageen-
Relação: dc.relationComputer Methods in Biomechanics and Biomedical Engineering-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectDental onlays-
Palavras-chave: dc.subjectdental prosthesis-
Palavras-chave: dc.subjectdental restoration failure-
Palavras-chave: dc.subjectfinite element analysis-
Palavras-chave: dc.subjecttooth preparation-
Título: dc.titleDoes overlay preparation design affect polymerization shrinkage stress distribution? A 3D FEA study-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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