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Bond strength of fibre glass and carbon fibre posts to the root canal walls using different resin cements |
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| Authors: | Farina Ana Paula Cecchin Doglas Garcia Lucas da Fonseca Roberti Naves Lucas Zago Pires-de-Souza Fernanda de Carvalho Panzeri |
| Institution: | 1. Department of Dental Materials and Prosthodontics, Ribeir?o Preto School of Dentistry, S?o Paulo University, Ribeir?o Preto, S?o Paulo, Brazil;2. Department of Restorative Dentistry, Ribeirao Preto School of Dentistry, S?o Paulo University, Ribeir?o Preto, S?o Paulo, Brazil;3. Department of Restorative Dentistry, Dental Materials Area, Piracicaba School of Dentistry, Campinas State University, Piracicaba, S?o Paulo, Brazil |
| Abstract: | 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. |
| Keywords: | fibre post luting agent push‐out resin cement |
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