Year : 2019

Volume : Volume 10

Issue : Issue 1

Address for correspondence :
Dr. Santosh Kumar.
SantoshKumar@gmail.com

Abstract

Background:  This study compared the amount of canal transportation, canal centering ability after instrumentation and time required for shaping of canal with WaveOne Primary Reciprocating file and OneShape Rotary file. Materials and Method: Thirty intact mesial roots of mandibular first molars were divided into Group I and Group II. Specimens in Group I was shaped with WaveOne Primary reciprocating files to the working length (WL) and specimens in Group II were shaped with OneShape Rotary file to the WL. Time required to prepare each canal was recorded. All the specimens were submitted to micro-computed tomography (µCT) unit for Pre- and post-instrumentation scan. Images were reconstructed and cross-sections corresponding to distances 3, 6 and 9 mm from the anatomic apex were selected for analysis. Statistical analysis was performed with Kruskal Wallis and paired t test. Results: Overall, both rotary files-maintained root canal curvatures well. During canal preparation, OneShape file performed significantly better in the apical third when compared to the WaveOne Reciprocating file. WaveOne file required reasonably less time to prepare canal when rather than OneShape file. Conclusions: The OneShape rotary system, probably owing to its cross-sectional design and comparative less taper (than WaveOne Primary file) seems under the conditions of this study to be a better choice in preparing severe curved root canals.

Keywords: Canal centering, micro-computed tomography, OneShape, transportation, WaveOne.