dentist, researcher University of California, Los Angeles LOS ANGELES, California, United States
Introduction: The aim of this in vitro study was to evaluate the effect of three distinctive sealers on the push-out bond strength of fiber posts cemented with a dual cure self-adhesive resin cement. Materials and
Methods: After removing/cutting off the crowns of 64 maxillary incisors, the root canals were prepared using NiTi rotary instruments (Goldent, China). Then, the samples were randomly divided to four groups (n=16). In group 1 (the controls) gutta-percha was used without sealer. In groups 2, 3 and 4, the canals were filled with gutta-percha using AH-26 (DENTSPLY Maillefer, Germany), Dorifill ( DoriDent, Austria) and BC(calcium silicate-based) sealers (MK Life, Brazil), respectively, by cold lateral compaction technique. After post space preparation, the fiber posts (Glassix, Nordin, Swiss) were cemented in the root canals using dual cure self-adhesive (Bifix SE, Voco, Germany). Then, 1 mm thick sections were prepared from the coronal thirds of all the root canals and subjected to a push-out test. Data was analyzed using the one-way ANOVA and post hoc Tukey’s tests.
Results: The results showed that the highest bond strength belonged to the samples filled with AH-26 sealer (p < 0.05) and the least bond strength was obtained in samples filled with ZOE sealer (p < 0.05).
Conclusion: Sealer type affected the bond strength of the fiber posts.
