Finite element analysis and fracture resistance testing of a new intraradicular post

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dc.contributor.authorColauto Yamamoto, Eron Toshio [UNESP]
dc.contributor.authorPagani, Clovis [UNESP]
dc.contributor.authorda Silva, Eduardo Galera [UNESP]
dc.contributor.authorNoritomi, Pedro Yoshito
dc.contributor.authorUehara, Andre Yugou
dc.contributor.authorKemmoku, Daniel Takanori
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.date.accessioned2014-05-20T14:05:21Z
dc.date.available2014-05-20T14:05:21Z
dc.date.issued2012-07-01
dc.description.abstractObjectives: The objective of the present study was to evaluate a prefabricated intraradicular threaded pure titanium post, designed and developed at the Sao Jose dos Campos School of Dentistry - UNESP, Brazil. This new post was designed to minimize stresses observed with prefabricated post systems and to improve cost-benefits. Materials and and methods: Fracture resistance testing of the post/core/root complex, fracture analysis by microscopy and stress analysis by the finite element method were used for post evaluation. The following four prefabricated metal post systems were analyzed: group 1, experimental post; group 2, modification of the experimental post; group 3, Flexi Post, and group 4, Para Post. For the analysis of fracture resistance, 40 bovine teeth were randomly assigned to the four groups (n=10) and used for the fabrication of test specimens simulating the situation in the mouth. The test specimens were subjected to compressive strength testing until fracture in an EMIC universal testing machine. After fracture of the test specimens, their roots were sectioned and analyzed by microscopy. For the finite element method, specimens of the fracture resistance test were simulated by computer modeling to determine the stress distribution pattern in the post systems studied. Results: The fracture test presented the following averages and standard deviation: G1 (45.63 +/- 8.77), G2 (49.98 +/- 7.08), G3 (43.84 +/- 5.52), G4 (47.61 +/- 7.23). Stress was homogenously distributed along the body of the intraradicular post in group 1, whereas high stress concentrations in certain regions were observed in the other groups. These stress concentrations in the body of the post induced the same stress concentration in root dentin. Conclusions: The experimental post (original and modified versions) presented similar fracture resistance and better results in the stress analysis when compared with the commercial post systems tested (08/2008PA/CEP).en
dc.description.affiliationUniv Estadual Paulista UNESP, Sao Jose dos Campos Dent Sch, Dept Restorat Dent, Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationUniv Estadual Paulista UNESP, Sao Jose dos Campos Dent Sch, Dept Social Dent, Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationState Univ Campinas UNICAMP, Campinas, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista UNESP, Sao Jose dos Campos Dent Sch, Dept Restorat Dent, Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista UNESP, Sao Jose dos Campos Dent Sch, Dept Social Dent, Sao Jose Dos Campos, SP, Brazil
dc.format.extent427-434
dc.identifierhttp://dx.doi.org/10.1590/S1678-77572012000400007
dc.identifier.citationJournal of Applied Oral Science. Bauru-sp: Univ São Paulo Fac Odontologia Bauru, v. 20, n. 4, p. 427-434, 2012.
dc.identifier.fileS1678-77572012000400007.pdf
dc.identifier.issn1678-7757
dc.identifier.lattes5130377144315365
dc.identifier.lattes5604009688788243
dc.identifier.orcid0000-0002-1074-5319
dc.identifier.scieloS1678-77572012000400007
dc.identifier.urihttp://hdl.handle.net/11449/22932
dc.identifier.wosWOS:000309419000007
dc.language.isoeng
dc.publisherUniversidade de São Paulo (USP), Faculdade de Odontologia de Bauru
dc.relation.ispartofJournal of Applied Oral Science
dc.relation.ispartofjcr1.709
dc.relation.ispartofsjr0,645
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectPost and core techniqueen
dc.subjectFinite element analysisen
dc.subjectStress fracturesen
dc.titleFinite element analysis and fracture resistance testing of a new intraradicular posten
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/jaos/paboutj.htm
dcterms.rightsHolderUniv São Paulo Fac Odontologia Bauru
unesp.author.lattes5604009688788243[3]
unesp.author.lattes5130377144315365[2]
unesp.author.orcid0000-0002-5536-0535[3]
unesp.author.orcid0000-0002-1074-5319[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Ciência e Tecnologia, São José dos Campospt

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Artigos - Odontologia Restauradora - ICT
Artigos - Odontologia Social e Clínica Infantil - ICT