Bond strength of fibre glass and carbon fibre posts to the root canal walls using different resin cements

作者：Farina Ana Paula; Cecchin Doglas; Roberti Garcia Lucas da Fonseca; Naves Lucas Zago; Panzeri Pires de Souza Fernanda de Carvalho

来源：Australian Endodontic Journal, 2011, 37(2): 44-50.

DOI：10.1111/j.1747-4477.2010.00253.x

• fibre post
• luting agent
• push-out
• resin cement

The aim of the study was to evaluate the bond strength of fibre glass and carbon fibre posts in the root canal walls cemented with self-adhesive (RelyX-Unicem) and chemical (Cement-Post) resin cements. Forty maxillary canines were divided into four groups according to the cement and post used and submitted to the push-out test (0.5 mm min(-1)). The data were submitted to statistical analysis (2-way ANOVA, Bonferroni - P < 0.05) and fracture analysis by Scanning Electronic Microscopy. Fibre glass presented the best results when cemented with RelyX-Unicem and Cement-Post (P < 0.05). RelyX-Unicem presented the highest bond strength values for both posts (P < 0.05). Fracture analysis showed predominance of cohesive fracture of post for RelyX-Unicem and adhesive fracture between dentin/cement and mixed for Cement-Post. The bond strength values were significantly affected by the type of post and cement used and the highest values were found for fibre glass posts and RelyX-Unicem.

• 出版日期2011-8