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Background: Pulpectomy is the choice of treating symptomatic primary teeth with chronic inflammation or necrosis of the radicular pulp.
Aim: This study's objective is to contrast the instrumentation time and quality of obturation of pediatric rotary file system Kedo-S, Kedo-S Plus and hand file
Material and Methods: This study included 45 patients between 4-7 years of age, who underwent pulpectomy in the necrotic posterior teeth with a minimum of 2/3rd of tooth structure remaining. There were 3 groups namely Group 1 with Kedo S plus preceded by initial hand instrumentation up to 15H file. Group 2 with Kedo S rotary with D1 and E1 anteceded by initial hand instrumentation up to 15H file and Group 3 with hand file instrumentation up to 35 H file. These were then graded using the Coll and Sadrian obturation grading system into optimal fill, underfilled and overfilled. The data collected was transferred to MS Excel Sheet and datas collected were then imported to SPSS IBM Version 20.0.
Results and Discussion: The results showed that the mean instrumentation time on using Kedo-S Plus (74.65+7.45s) was significantly less than the Kedo-S pediatric rotary files and hand files with p<0.05 (statistically significant).