| dc.description.abstract | Various factors influence the interfacial bond between fiber posts and intraradicular dentin. The aim of the present study was to evaluate the effect pre-warming of resin cement on the push-out bond strength of fiber posts to various segments of intraradicular dentin. Materials and methods: In this in vitro study, 40 single-rooted human premolars were decoronated and underwent root canal treatment along with post space preparation. The samples were randomly divided into two groups: In group 1, Panavia 0.2 cement was used at room temperature; in group 2, the same cement was warmed to 55-60C before mixing. After fiber posts were placed and cemented in the root canals, 3 dentin/post sections (coronal, middle and apical) with a thickness of 2 mm was prepared. A universal testing machine was used to measure push-out bond strength in MPa. Data was analyzed with two-factor ANOVA and a post hoc Tukey test at =0.05. Results: There were significant differences in the means of push-out bond strength values between the two resin cement temperatures and between different root segments; however, the interactive effect of temperature and various root segments was not significant. Conclusion: Pre-warming of Panavia 0.2 resin cement up to 55-60C reduces bond strength to intraradicular dentin. | |
