Dr. Abdul Rahman M. Saleh received his DDS, MSc, and PhD from the University of Baghdad, Iraq, and has more than twenty years of experience in academic teaching and clinical practice. Currently, he is an Associate Professor in the Restorative Dentistry Department at Ajman University, where he has had the privilege of working in both preclinical and clinical restorative dentistry courses for undergraduate and MSc programs. He has also been involved in preparing and revising numerous courses in both the DDS and Master’s programs in Restorative Dentistry. In addition, Dr. Saleh has authored several scientific abstracts and articles in his area of interest.
Abstract Background Shaping ability of a file plays an important role during instrumentation in an endodontic treatment. This study aimed to compare the shaping ability of OneShape (OS), Hero Shaper (HS), and Revo-S (RS) instruments in simulated L-shaped canals. Methods Forty-eight simulated L-shaped canals were prepared to an apical size of 25 using OS, HS, and RS (all from Micro-Mega SA, Besançon, France), (n = 16 canals/group) systems. The amount of resin removed after each canal's preparation was measured and compared after producing a composite image made from the superimposition of pre and post-instrumented canals. Canal aberrations and the preparation time were also recorded. The data were statistically analysed by using ANOVA, Tukey, and Chi-square tests. Results One file fractured during instrumentation in the RS group. A significant difference was found at the apical end of the prepared simulated canal between the groups, with RS showing the least amount of resin removal from the inner side of the canals and HS showing the highest amount of resin removal from the outer side (P