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Objective: To evaluate and compare the canal centering ability and canal transportation in curved root canals after instrumentation with ProTaper Universal files, Protaper Next files and Twisted Files by using CBCT. Materials and Methods: Seventy-two human mandibular first molars were randomly divided into 3 groups (n = 24) as per the instrumentation Group 1ProTaper Universal, Group 2ProTaper Next and Group 3Twisted File. Pre & post-operative CBCT images were obtained and the shortest distance from the canal wall to the external root surface was measured in the mesio distal and bucco lingual direction at 3mm, 6mm and 9mm from apex. Statistical analysis was done using One Way ANOVA followed by post hoc Tukeys test with SPSS version 19. P value was set at ˂ 0.05. Results: Statistically significant difference was found between the groups with p < 0.001, Protaper Next showing the best performance. Conclusion: ProTaper Next NiTi rotary system shows superior canal centering ability. There is more canal transportation towards the outer surface with ProTaper Universal and towards the inner surface with Twisted file.

dentistry

Assessment of Canal Centering Ability and Canal Transportation of Protaper Universal, Protaper next and Twisted Files Using Cone Beam Computed Tomography: An In Vitro Study