CLEANING EFFICACY OF WAVEONE, PROTAPER AND MANUAL INSTRUMENTS IN PREPARATION OF PERMANENT TEETH: A COMPARATIVE IN VITRO STUDY

Abstract

ABSTRACTBackground and Objective: Efficient biomechanical preparation of the root canal system isessential for achieving the biological and mechanical objectives of root canal treatment. Thisstudy was aimed to compare the cleaning efficacy of manual instrument, ProTaper andWaveOne rotary systems in the preparation of root canals.Materials and Methods:Sixty permanent mandibular premolars with single canal were used in this study. Accesscavities were prepared using diamond burs and Indian ink was injected into canals. The teethwere randomly divided into three experimental groups and one control group of 15 teetheach. For each experimental group, either manual instruments or rotary instruments(WaveOne and ProTaper) were used to prepare root canals. In the control group, the canalswere filled with Indian ink and irrigated with normal saline but not instrumented. After that,the teeth were cleared with Methyl salicylate, and the removal of Indian ink was evaluated inthe cervical, middle and apical thirds of the roots by using Stereomicroscope. Kruskal –Wallis and Mann-Whitney U tests were used for Statistical analysis.Results:The efficacy of Rotary instruments (ProTaper and Wave One) was much better than manualinstrument in all thirds of the prepared root canals. Compared to manual and control groups,ProTaper and WaveOne files showed more ink removal with a highly significant difference(P > 0.05). Differentially, ProTaper exhibited better results than WaveOne and showed moreink removal, but the difference didn't achieve statistical significance (P>0.46).Conclusion:ProTaper and WaveOne showed better cleaning efficacy when compared to manualinstrument in all thirds of the canal. ProTaper files performed better than WaveOne althoughthe difference between them was statistically not significant.