The Effect of Different Final Irrigant Activation Techniques on the Bond Strength of an MTA-Based Endodontic Sealer- An in Vitro Study

Aim: We aimed to evaluate and compare the effect of EndoVac™ irrigation, EndoActivator™ irrigation, Laser activated irrigation (LAI), Passive Ultrasonic Irrigation systems (PUI), and Manual irrigation system on push-out bond strength of endoseal Mineral trioxide aggregate (MTA) sealer. Settings and Design: In vitro study. Methods and Materials: Twenty five single rooted anterior teeth were prepared using ProTaper system to size F4, and using 5.25%sodium hypochlorite (NaOCl) and 17% Ethylenediamine tetraacetic acid (EDTA) a final irrigation regimen was done and then divided randomly into 5 groups: Conventional needle, Apical negative pressure using EndoVac™, Sonic Activation using EndoActivator™, PUI, and LAI. All the teeth were dried using paper point and obturated using single cone obturation using Endoseal MTA sealer. A push-out test was used to measure the bond strength. Results: The push out bond strengths of the conventional needle were lower compared to the other groups wherein different irrigation systems were used. However, a substantial increase was noted in EndoVac, EndoActivator, and PUI groups compared to the conventional needle group. The LAI system group showed no significant increase to the conventional group. Conclusion: Different irrigation activation systems increased the bond strength of MTA sealer.