Fracture resistance of bovine incisors restored with different glass fiber posts: Effect of the diameter of fiber post

dc.contributor.authorZogheib, Lucas Villaça [UNESP]
dc.contributor.authorVasconcellos, Luis Gustavo Oliveira [UNESP]
dc.contributor.authorSalvia, Ana Carolina Rodrigues Danzi [UNESP]
dc.contributor.authorBalducci, Ivan [UNESP]
dc.contributor.authorPagani, Clovis [UNESP]
dc.contributor.authorBottino, Marco Antonio [UNESP]
dc.contributor.authorValandro, Luiz Felipe [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionFederal University of Santa Maria
dc.date.accessioned2014-05-27T11:26:58Z
dc.date.available2014-05-27T11:26:58Z
dc.date.issued2012-09-01
dc.description.abstractAim: Compare the effect of three post designs on the fracture resistance and failure modes of composite core-fiber post-crownless tooth sets. Materials and Methods: Ninety bovine incisors were selected and divided into nine groups of 10 specimens. The teeth were assigned to three groups based on the post design: Cylindrical, tapered, and double-tapered. Each group was subdivided into three subgroups in accordance with the diameter of the post: Small (No.1), medium (No.2), and large (No.3). The Panavia F system was used for post cementation. The specimens were mounted in acrylic resin blocks with a layer of silicone rubber covering the roots. A universal testing machine compressively loaded the specimens from the palatal side at a crosshead speed of 1 mm/min and at an angle of 135I to the long axis of the teeth, until failure occurred. The failure mode was determined by a stereomicroscope inspection of all the specimens. Data were analyzed by one-way ANOVA and the Tukey test (P < 0.05). Results: The fracture resistance was affected by the type of post (P < 0.0001). A narrower diameter for all of the post systems allowed for higher resistance. The main failure mode in the large cylindrical group was catastrophic fractures, while the main failures in the other eight groups were favorable. Conclusion: Narrower diameter posts showed higher fracture resistance. The dominant failure pattern was repairable fracture, except for those with large cylindrical groups.en
dc.description.affiliationSao Jose Dos Campos Dental School São Paulo State University, São José dos Campos
dc.description.affiliationOral Science (Prosthodontic Unit) Faculty of Odontology Federal University of Santa Maria, Santa Maria
dc.description.affiliationUnespSao Jose Dos Campos Dental School São Paulo State University, São José dos Campos
dc.format.extent623-627
dc.identifierhttp://dx.doi.org/10.4103/0970-9290.107379
dc.identifier.citationIndian Journal of Dental Research, v. 23, n. 5, p. 623-627, 2012.
dc.identifier.doi10.4103/0970-9290.107379
dc.identifier.issn0970-9290
dc.identifier.issn1998-3603
dc.identifier.lattes5130377144315365
dc.identifier.lattes9234456003563666
dc.identifier.orcid0000-0002-1074-5319
dc.identifier.scopus2-s2.0-84875731388
dc.identifier.urihttp://hdl.handle.net/11449/73546
dc.language.isoeng
dc.relation.ispartofIndian Journal of Dental Research
dc.relation.ispartofsjr0,266
dc.relation.ispartofsjr0,266
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectfiber post
dc.subjectFracture strength
dc.subjectpost diameter
dc.titleFracture resistance of bovine incisors restored with different glass fiber posts: Effect of the diameter of fiber posten
dc.typeArtigo
dcterms.licensehttp://www.jpgmonline.com/contributors.asp
unesp.author.lattes9234456003563666
unesp.author.lattes5130377144315365[5]
unesp.author.orcid0000-0002-1074-5319[5]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Ciência e Tecnologia, São José dos Campospt

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