Aim: The aim of this study was to compare the instrumentation time and cleaning efficacy of K3 and ProTaper rotary files. Materials and Methods: Across-sectional study was conducted to investigate the cleaning efficiency and instrumentation time of K3 and ProTaper rotary files. A close-ended questionnaire consisting of 10 questions was distributed online. The participants included dental interns, general practitioners, endodontic residents, and endodontists. Data were analyzed using SPSS Version 22. Results: A total of 200 participants responded to the survey. More than half reportedthat ProTaper rotaryNiTi system have better cleaning efficiency, instrumentation time, root canal preparation, and effective in curved canal. Over 50% observed distortion and fracture instrument by K3 rotary NiTi system. Conclusions: From the findings of this study it can be concluded that instrumentation time and cleaning efficacy of NiTirotary systems was in agreement with the ProTaper rotary systems.
Key words: Root canal instrumentation, NiTi, ProTaper rotary files, K3 rotary files