A COMPARATIVE EVALUATION OF THREE ROOT CANAL INSTRUMENTATION SYSTEMS IN PREPARATION OF CURVED CANALS USING CBCT
AN IN VITRO STUDY
Abstract
Introduction: The aim of this study is to evaluate and compare three different Ni Ti rotary file systems in shaping & cleaning of curved canals by using CBCT.
Method: A total of 60 messiobuccal root canals of maxillary first molars were prepared by Hyflex CM, K3XF and Protaper Next. Cone beam computed tomography (CBCT) was used to scan the specimen before and after instrumentation. The transportation and centering ability for coronal, middle and apical third of the canals was measured.
Results: Group 3 (Pro Taper Next) showed to be the most centered file as compared to Group 1 (Hy Flex CM) and Group 2 (K3XF) at all the three levels, however, there was no significant difference at 3mm and 6mm from the apex. There was a significant difference in centering ability of Group 3 (Pro Taper Next) as compared to Group 1 (Hyflex CM) and Group 2 (K3XF) file systems at 9mm. There was no significant difference in the canal transportation amongst the three groups.
Conclusion: In vitro, Hyflex CM, K3XF and Protaper Next shaped curved root canals in maxillary first molars without significant shaping errors.