Comparison of obturation quality, instrumentation time and post-operative pain using manual K-files and pediatric rotary files in primary molars a double blinded randomised clinical trial

Objective: to compare the quality of obturation, instrumentation time and post-operative pain after pulpectomy in primary molars using manual K-files, Kedo-S Square rotary file systems. Material Methods: a double blinded randomized control trial was conducted 45 children, who were indicated for any one mandibular molars. The canal preparation done either hand files, or files based on groups assigned. taken recorded stopwatch. obturation evaluated radiograph assessed with modified Wong-Baker Faces Pain scale. Results: minimum (53.23 ± 9.60 seconds) followed by (82.70 11.86 seconds). maximum K-files (121.43 20.18 square provided higher number optimally filled canals (66.4%). All three instrumentations equally showed tendency produce voids obturation. Rotary less compared K-files. Conclusion: use pediatric instruments during will result better reduced least pain. KEYWORDS Children; Hand files; Instrumentation; Pulpectomy; files.