Evaluation of bond strength of a novel endodontic sealer to root canal dentin: an in vitro study

Original Research

Abstract

Introduction:

An ideal endodontic sealer should be tacky when mixed, radiopaque, non-toxic, non-irritant, bacteriostatic, and easily retrievable. The endodontic sealers that are commonly used are zinc oxide eugenol (ZOE) sealer, calcium hydroxide sealer and more recently resin sealers. Resin based sealers are one such category that is gaining popularity due to it no eugenol formulation and chemical adhesion to the root surface. This study was conducted with the aim of comparing the bond strength of three different endodontic sealers to root canal dentin.

Materials and Methods:

The samples for this study consisted of sixty single rooted extracted teeth with completely formed apices. Access was opened, working length determined followed by biomechanical preparation with irrigation was performed. Samples Teeth were split into 3 groups: Group A – ZOE sealer, Group B – AH plus sealer, Group C – Xenon epoxyl plus sealer. Manipulation and application of the sealer was done based on the manufacturer’s directives. All the sixty teeth were obturated based on the group criteria. After obturation each tooth was sectioned, and testing of its bond strength was carried out using the universal testing machine.

Results:

Group B and Group C had higher bond strength compared to Group A, but it showed no statistically significant difference between Group B and Group C. 

Conclusion:

Push out bond strength was observed to be more in resin sealer groups in comparison with zinc oxide eugenol sealers.