Results were separated into 3 different groups due to differences in file design. Twelve of each file type were evaluated for bending and 18 of each type were evaluated with torsion. Testing was done with a torsiometer following ISO 3630-1. 06 taper EdgeFile X3 (EdgeEndo), ProTaper Universal (Dentsply), ProTaper Gold (Dentsply). 04 taper EdgeFile X7, EdgeFile X5, EndoSequence (Brasseler), Vortex Blue (Dentsply), GT Series X (Dentsply), K3XF (SybronEndo), HyFlex CM (Coltene/Whaledent, Inc.), and. Ten different files systems were evaluated. The purpose of this study was to compare the torsion and bending properties of a brand new file system (EdgeFiles by EdgeEndo, Albuquerque, NM) marketed as being twice as strong but half the price compared to other marketed files Materials and Methods: Thirty files of each type were used. A file’s resistance to torsional fatigue reduces the chance of file breakage. File flexibility allows for better maintenance of canal anatomy. The challenge for the practitioner is to select a rotary file system that will be flexible enough to maintain canal anatomy but strong enough to prevent breakage under normal use. It is essential to maintain proper canal anatomy while cleaning and shaping. This process involves using endodontic rotary files combined with chemical irrigants to remove pulpal remnants and infected dentin from the canal while eliminating pathogenic bacteria. Introduction: One important step of root canal therapy is the process of cleaning and shaping each canal.
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