COMPARATIVE EVALUATION OF ROOT CANAL SEALERS AND RESIN CEMENTS ON FIBER POST-DENTIN BOND STRENGTH

Purpose: the present study evaluated fiber post bond strength in root dentin using various root canal sealers and resin cements. material and methods: after root canal preparation, teeth were divided into 5 distinct groups (sealapex (calcium hydroxide-based); ah plus (resin-based); tubli-seal (eugenol-based); bc sealer (bioceramicbased) and no sealer (control) according to root canal sealer used. after root filling, post space preparations were done. five main groups were subdivided into 3 groups (self-etch, etch-and-rinse, and self-adhesive) corresponding to the resin systems applied. after post cementation, 3 slices were obtained from different regions (coronal, middle, apical) for push-out testing. sem images of specimens were obtained to evaluate for debonding failures. differences in bond strength were evaluated by anova and post-hoc tukey hsd methods. results: it was observed that in tubli-seal, bc sealer and sealapex groups the bond strength was significantly decreased (p < 0.01). no significant difference (p > 0.05) in bond strength values was observed between the ah plus and control groups. it was also observed that the bond strength values were similar (p >0.05) in different resin cement systems. conclusion: root canal sealers affect bond strength between fiber posts and the root canal dentin, whereas different resin cement systems have no effect on the bond strengths.