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Type: Artigo
Title: Bond strength of fiber posts in different root thirds using resin cement
Author: Farina, Ana Paula
Cecchin, Doglas
Garcia, Lucas da Fonseca Roberti
Naves, Lucas Zago
Sobrinho, Lourenço Correr
Pires-de-Souza, Fernanda de Carvalho Panzeri
Abstract: The aim of the study was to assess the in vitro bond strength (BS) of glass fiber posts (GF) and carbon fiber posts (CF) in the cervical, middle, and apical thirds of root canals cemented with RelyX-Unicem (RX) and Cement-Post (CP). Materials and Methods: Forty maxillary canines were divided into 4 groups (n = 10) according to the cement and post used: group 1: GF and RX; group 2: CF and RX; group 3: GF and CP; group 4: CF and CP. The push-out test was applied in the cervical, middle and apical thirds of each specimen to assess bond strength of the cement/post complex to the root canal wall. The data obtained were submitted to ANOVA (Bonferroni test, p < 0.05), and fracture analysis was done with SEM. Results: The GF posts presented the best results when cemented with RX and with CP (p < 0.05). RX presented the highest BS values for both GF and CF (p < 0.05). For all the groups, BS was higher in the cervical third, followed by the middle and apical thirds. Fracture analysis showed a predominance of cohesive fracture of posts for RX, and a predominance of adhesive fracture between dentin/cement, and mixed failure mode for CP. Conclusion: GF posts cemented with RX presented the highest BS values in all root thirds.
Subject: Cimentos resinosos
Country: Reino Unido
Editor: Quintessence Publishing
Rights: Fechado
Identifier DOI: 10.3290/j.jad.a18444
Date Issue: 2011
Appears in Collections:FOP - Artigos e Outros Documentos

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