Fracture resistance of weakened roots restored with composite resin and glass fiber post

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversity of Southern Santa Catarina-
Autor(es): dc.contributorAmazonas State University-
Autor(es): dc.creatorZogheib, Lucas Villaça-
Autor(es): dc.creatorPereira, Jefferson Ricardo-
Autor(es): dc.creatordo Valle, Accácio Lins-
Autor(es): dc.creatorde Oliveira, Jonas Alves-
Autor(es): dc.creatorPegoraro, Luiz Fernando-
Data de aceite: dc.date.accessioned2025-08-21T17:20:04Z-
Data de disponibilização: dc.date.available2025-08-21T17:20:04Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2008-01-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1590/s0103-64402008000400008-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/231197-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/231197-
Descrição: dc.descriptionThis study evaluated the fracture resistance of weakened roots restored with glass fiber posts, composite resin cores and complete metal crowns. Thirty maxillary canines were randomly divided into 3 groups of 10 teeth each: teeth without weakened roots (control); teeth with partially weakened roots (PWR) and teeth with and largely weakened roots (LWR). The control group was restored with glass fiber posts and a composite resin core. Teeth in the PWR and LWR groups were flared internally to standardized dimensions in order to simulate root weakness. Thereafter, the roots were partially filled with composite resin and restored in the same way as in the control group. The specimens were exposed to 250,000 cycles in a controlled chewing simulator. All intact specimens were subjected to a static load (N) in a universal testing machine at 45 degrees to the long axis of the tooth until failure. Data were analyzed by one-way ANOVA and Dunnett's test for multiple comparisons (p=0.05). There were statistically significant difference differences (p<0.01) among the groups (control group = 566.73 N; PWR = 409.64 N; and LWR = 410.91 N), with significantly higher fracture strength for the control group. There was no statistically significant difference (p>0.05) between the weakened groups. The results of this study showed that thicker root dentin walls significantly increase the fracture resistance of endodontically treated teeth.-
Descrição: dc.descriptionDepartment of Prosthodontics Dental School of São José dos Campos State University of São Paulo, São Jose dos Campos, SP-
Descrição: dc.descriptionDepartment of Prosthodontics Dental School University of Southern Santa Catarina, Tubarão, SC-
Descrição: dc.descriptionDepartment of Prosthodontics Dental School of Bauru University of São Paulo, Bauru, SP-
Descrição: dc.descriptionDepartment of Prosthodontics Amazonas State University, Manaus, AM-
Formato: dc.format329-333-
Idioma: dc.languageen-
Relação: dc.relationBrazilian Dental Journal-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectComposite resins-
Palavras-chave: dc.subjectFracture strength-
Palavras-chave: dc.subjectPost-and-core technique-
Título: dc.titleFracture resistance of weakened roots restored with composite resin and glass fiber post-
Tipo de arquivo: dc.typelivro digital-
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