Comparative Assessment for the Effect of Dia-X Files Versus ProTaper Next on Canal Angulation Changes and Degree of Apical Transportation: An In vitro Cone-Beam CT Study

The outstanding development of NiTi rotary filing systems, has left a great effect on endodontic practicing, which may be mainly related to the superior characteristics of the material itself as well as the continuous innovations regarding its manufacturing process and heat treatments. The aim of this present study, was to compare and evaluate the shaping performance of two rotary Nickel Titanium files, namely; ProTaper Next, Dia-X Files in curved root canal preparation, regarding the extension of apical transportation and amount of canal angulation changes. Apical transportation as well as degree of canal curvature were measured using the Cone Beam Computed Tomographic scanning, then all the data were statistically analyzed by the aid of Chi-square test and paired Student's t test. Within the limited conditions of the present study, there was no significant difference in apical root canal transportation between both systems. Moreover, both systems tend to retain the original canal curvatures within the same degree. Experimental article (J Int Dent Med Res 2020; 13(4): 1314-1319)