Shaping Ability of WaveOne Reciprocating Ni-Ti Instrument In Curved Root Canals (In Vitro Study)

Abstract

The efficient shaping of the root canals and maintaining their curvature is an essential goal for every root canal treatment. The introduction of the new single filetechniques is promising in providing efficient, safe andquickpreparation with less time consuming and more comfortable to the patient. The aim of this study was to evaluate ProTaperrotary Ni-Ti and WaveOne reciprocating Ni-Ti instruments in terms of Canal transportation, Remaining dentine thickness andCentering ability. Thirty mesiobuccalcanals of human mandibular molars weredivided in two groups 15 mesiobuccalcanals each. Group A prepared with WaveOnefiles and group B prepared withProtaperfiles. The teeth were fixed in position in impression compound inside plastic dental arch during the whole study for each group and then the teeth were scanned using Cone Beam Computed Tomography before and after preparation. Fusion of the pre-instrumentation and post- instrumentation records was achieved using special software that allows manual and then automaticregistration of the primary and secondary images. The data was tabulated and statistically analysed. The result showed regarding to centering ability,remaining dentine thickness and transportation presence of insignificant difference between WaveOne file and Protaper file.