Is SWEEPS (Laser assisted irrigation) better than Passive Ultrasonic Irrigation and XP-Endo Finisher?-An in vitro study

Persistent microorganisms in the canal, insufficient root canal filling, and inadequate made restorations can be shown as reasons for root canal treatment (RCT) failure (1).Endodontic retreatment is seen as a successful treatment option when the RCT is unsuccessful (2).The aim of endodontic retreatment is the complete removal of gutta-percha and sealer from the canals; however, completely Purpose: The study's objective was to evaluate the efficiency of various irrigation activation methods for removing gutta-percha and sealer using Micro-CT and SEM after retreatment with rotary files.Methods: Twenty-one permanent single-rooted teeth that were extracted and had a single canal were decoronated to a length of 16 mm.AH Plus sealer was used for obturating the root canals.Following obturation, Micro-CT scanning was carried out (S1).Another Micro-CT scan was performed following the elimination of the original filling material using ProTaper Universal retreatment files (S2).Next, each of the 21 samples was divided into three groups (n = 7): Group 1: XP-Endo Finisher (XPF); Group 2: Passive Ultrasonic Irrigation (PUI); Group 3: SWEEPS.Subsequent irrigation activation technique by one of each system was followed by the final Micro-CT scanning (S3).After calculating the remnant volume of the filling material, a single specimen was examined under a scanning electron microscope for every group.Statistical evaluation was accomplished utilizing the Kruskal-Wallis and Shapiro-Wilk tests.Results: After analyzing the samples, S1 and S2 scanning results revealed no statistically significant differences among the three groups (p > 0.05).Furthermore, no significant difference in the final volume of residual filling material (S3) between the three groups was found statistically. Conclusion:In summary, XPF, PUI, and SWEEPS techniques are equally efficient at removing remnant filling materials after conventional retreatments.