Push-out bond strength of fiberglass posts cemented with adhesive and self-adhesive resin cements according to the root canal surface

Objective: Evaluating the bond strength of fiberglass posts cemented with different resin cements.Materials and Methods: Seventy freshly extracted roots of healthy human canines were endodontically treated and prepared to receive fiberglass posts. The roots were randomly divided into seven groups: (G1) RelyX ARC, (G2) Enforce, (G3) BisCem, (G4) Duo-Link, (G5) Cement Post, (G6) Variolink II, and (G7) RelyX U200. After post cementation, the specimens were sectioned perpendicularly to the root axis using a high-speed diamond disc, totaling 340 specimens. The strength values obtained in the push-out test were submitted to two-factor ANOVA and Tukey test (p = 0.05). Results: The root thirds (p = 0.001) and the type of cement (p = 0.001) influenced the bond strength values. The relation between these two factors was also significant (p = 0.011). Conclusions: The bond strength of self-adhesive resin cements was significantly higher as compared to other cements. Besides the cervical third in roots cemented with conventional cements types presented the highest bond strength values (p < 0.05). (C) 2019 The Authors. Production and hosting by Elsevier B.V. on behalf of King Saud University.

Automated summary

This study evaluated the bond strength of fiberglass posts cemented with different resin cements. The results showed that self-adhesive resin cements had significantly higher bond strength compared to other cements, and the cervical third of roots cemented with conventional cements exhibited the highest bond strength values.