Comparative Evaluation of Dentinal Defects After Root Canal Preparation Using Various Nickel Titanium Files: An In Vitro Study

Abstract

Aim: This study set out to compare the damage done to dentin by three distinct titanium file brands - theHyflex EDM, the ProTaper Next, and the Waveone Gold Nickel - in order to draw conclusions about whichone is the most effective.Materials and methods: Forty-first premolars in the mandible with straight canals and single roots wereinstrumented using Hyflex EDM, Waveone Gold, and Protaper Next. Dentinal flaws after endodontictreatment were studied by sectioning specimens using a hard tissue microtome and analyzing them under astereomicroscope.Results: There was no discernible variation between the groups in the coronal third (p=0.312) or apical third(p=0.076). Hyflex EDM and Protaper Next differed significantly in the middle portion of the tape (p=0.016).The Hyflex EDM sample had the fewest cracks. There was no statistically significant difference betweenHyflex EDM and Waveone Gold; however, Hyflex EDM had fewer fractures in the middle third of the samplethan Waveone Gold did.Conclusion:Electric discharge machining (EDM) files made from Hyflex proved to be far superior to theirProtaper Next and Waveone Gold counterparts as they induced the fewest cracks in the middle third of theroot dentin