Cleaning efficacy of wave one, protaper and manual instruments in preparation of permanent teeth : a comparative in vitro study

Abstract EN

Background and Objective: Efficient biomechanical preparation of the root canal system is essential for achieving the biological and mechanical objectives of root canal treatment.

This study was aimed to compare the cleaning efficacy of manual instrument, ProTaper and WaveOne rotary systems in the preparation of root canals.

Materials and Methods: Sixty permanent mandibular premolars with single canal were used in this study.

Access cavities were prepared using diamond burs and Indian ink was injected into canals.

The teeth were randomly divided into three experimental groups and one control group of 15 teeth each.

For each experimental group, either manual instruments or rotary instruments (WaveOne and ProTaper) were used to prepare root canals.

In the control group, the canals were 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 in the 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 manual instrument 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 more ink removal, but the difference didn't achieve statistical significance (P>0.46).

Conclusion: ProTaper and WaveOne showed better cleaning efficacy when compared to manual instrument in all thirds of the canal.

ProTaper files performed better than WaveOne although the difference between them was statistically not significant.