Antimicrobial efficacy of manual versus rotary instrumentation on Enterococcus faecalis in nonvital primary molars

Abstract

ObjectiveTo compare between manual and rotary protaper filing techniques in partially pulpectomized primary molars from microbiological point of view.Materials and methodsThis study was performed on 60 badly decayed primary molars indicated for partial pulpectomy. Molars were selected from children attending the outpatient clinic of Pedodontics and Oral Health Department, Faculty of Dental Medicine, Al-Azhar University. The selected teeth were classified into two equal groups. GP 1: 30 primary molars were received partial pulpectomy using manual protaper filing system. GP 2: 30 primary molars were received partial pulpectomy using rotary protaper filing system. Microbiological assessment for the canal preparation were done after collection of initial and postfiling samples for each group.ResultsRotary group offers highest percent of bacterial reduction when compared with manual group with statistically significant differences.ConclusionRotary protaper instrumentation was more effective in reducing bacterial numbers in infected root canal than manual instrumentation. Both filing techniques did not give bacteria-free canal.