The retreatment abilities of ProTaper Next and F6 Skytaper: a micro-computed tomography study

Abstract

PurposeThe aim of this study was to evaluate the retreatment abilities of the ProTaper Next(PTN) and F6 SkyTaper (F6) systems by using micro-computed tomography (microct),radiographic and microscopic imaging techniques.Materials and MethodsThe root canals of twenty-six extracted mandibular premolar teeth were preparedand obturated. For the retreatment procedure, the teeth were randomly divided intotwo equal groups according to endodontic instruments: PTN (X4) and F6 (#40/.06).Pre- and post-operative filling material volumes were measured with micro-ct, andareas were measured with radiographic and microscopic imaging techniques. Thepercentages of residual material were calculated, and then statistically compared.The significance level was set at p0.05). PTNdemonstrated better cleaning ability when evaluated by microscopic imaging.(p