Background: The purpose of this study was to assess. The influence of diverse irrigation protocols on resin sealer bond strength to dentin.
Materials and Methods: A sum of 36 single-established andibular premolar teeth were utilized. Root channel forming strategies were applied with ProTaper rotary instruments (Dentsply Maillefer) up to measure F4. The prepared models were then arbitrarily collected into 3 groups (n = 12). For each group, an ultrasonic tip (measure 15, 0.02 taper) which was additionally covered with an epoxy resin based sealer and put 2 mm shorter than the working length. The sealer was then actuated for 10 s. A push-out test was utilized to gauge the bond strength between the root canal dentine and the sealer. Kruskal-Wallis test was used to assess the push-out bond strength of epoxy based sealer (P = 0.05). The failure mode information were statistically examined utilizing Pearson's chi square test (P = 0.05). Results: Kruskal-Wallis test showed that there were statistically insignificant difference between the push out bond strength values of 3 mm (p = 0.149) and 6 mm (P = 0.052) , for group one and two, while there was a  statistically significant difference with the push out bond strength value of 9 mm (P = 0.029). Pearson's chi square test showed statistically significant differences for the failure types among the groups.
Conclusion: Several epoxy resin based sealers actuated ultrasonically demonstrated comparative bond strength in oval formed root canals. Apical areas for all groups have higher push out bond strength standards than middle and coronal segments.