Comparative Evaluation of Three Different Rotary NiTi File System with Different Generation for Root Canal Centric Ability Using CBCT: An in-vitro Study

Introduction Successful root canal treatment depends on the removal of micro-organisms through instrumentation of the root canal system. This encompasses shaping by mechanical removal of the dentine and cleaning by chemical disinfection of microorganisms and dissolution of organic tissues from the root canal. While root canal shaping can be predictably and efficiently attained with advanced instrumentation technology, effective cleaning of the entire root canal system remains a challenge. Rotary Ni-Ti instruments are known for their efficient preparation of root canal. This is because of the super elasticity of the nickel titanium alloy which gives an increased flexibility and allows the instrument to efficiently follow the original path of root canal. The aim of this study is to compare the cleaning efficiency and shaping ability of Pro Taper Next, Mani Silk and M Two rotary instruments during the preparation of curve canals in extracted molars. Materials and Methods Thirty teeth with 12 mm as their working length were selected and divided into three groups of 10 teeth each Angle of curvature, Radius of curvature, was determined using computerized tomography. A Pre and Post-operative measurement of canal width and volume was recorded and compared using CB-CT. Results Results were calculated and statistically analysed to evaluate the shaping ability and cleaning efficiency. Conclusion The study concluded that ProTaperNext rotary system has negligible canal transportation and better centric ability in compression to Mani Silk and M tow rotary file system. It is one of the few rotary systems that provides quick and safe endodontic preparation.