Effect of gutta-percha solvents on the bond strength of two resin-based sealers to root canal dentin

Objective. To evaluate the effect of two gutta percha solvents on the bond strength of two resin-based sealers to root canal dentin. Materials and methods. Root canals of extracted single rooted human mandibular premolars (n = 60) were decoronated and instrumented with a rotary NiTi system to an apical size of 40 and randomly divided into three groups (n = 20) based on the chemical treatment: Group I, saline (control); group II, Xylene and group III, Endosolv E. All groups were divided into two sub-groups (n = 10) based on the root filling material: sub-group A, epoxy resin sealer (AH Plus); sub-group B, methacrylate resin sealer (Epiphany). Roots were then sectioned and push-out tests were performed. The data was analysed using two-way analysis of variance (ANOVA) and a multiple comparison test (p = 0.05). Results. There was a significant difference in bond strength of both sealers between the control and test groups (p 0.05). Conclusions. Gutta Percha solvents had an adverse effect on bond strengths of resin sealers to root canal dentin. This was dependent on the chemistry of the solvent and the sealer. © 2014 Informa Healthcare.Link_to_subscribed_fulltex