Abstract

Abstract
Background: The moisture condition of the root canal can significantly influence the bond strength of endodontic sealers, which is critical to the long-term success of root canal therapy. While the single-cone obturation technique is widely used, the effect of different canal drying protocols on the adhesion of various sealers remains unclear.
Aim: This study aimed to evaluate the effect of two drying protocols, paper points and 95% alcohol, on the push-out bond strength of three sealers: AH Plus, GuttaFlow 2, and RealSeal SE, when used with the single-cone technique.
Materials and Methods: Sixty extracted maxillary central incisors were decoronated and instrumented, then divided into two main groups based on drying protocol. Each group was further divided into three subgroups according to sealer type. Push-out bond strength tests were performed at the coronal, middle, and apical levels. Failure modes were examined, and data were analyzed using two-way ANOVA.
Results: Both the drying method and canal region significantly affected bond strength (p

Key words: AH Plus, Bond strength, Drying protocols, GuttaFlow 2, Root canal sealers, RealSeal SE, Single-cone obturation technique