Push-out bond strength and SEM analysis of two self-adhesive resin cements: An in vitro study

Abstract

Purpose: The retentive strength of two self-adhesive resin cements used for the cementation of fiber posts into root canals filled with methacrylate-based sealer and core material (Resilon) was evaluated using the thin-slices push-out test on human molars. Materials and methods: RelyX Fiber Posts #3 (3M ESPE, Seefeld, Germany) were luted with RelyX U200 (3M ESPE) (n = 10) and Maxcem Elite (Kerr Corporation, Orange, CA, USA) (n = 10). Mean values of push-out bond strength for each group and root region (cervical, middle and apical) were calculated. Data were statistically analyzed with one-way ANOVA and Tukey's test (P 60%) adhesive failures at the resin cement-dentine interface were observed.

Keywords

• fiber posts
• push-out bond strength
• root canal dentine
• self-adhesive resin cements