Remaining dentine thickness of root canals prepared with K-3 and proTaper rotary systems

Objective: To compare the remaining dentine thickness of root canals prepared with K-3 and ProTaper files. Methods: This in-vitro experimental study was conducted from 1st April-30th September 2015 at the dental clinics of Aga Khan University Hospital, Karachi, and comprised human teeth. Extracted human premolars and molars were included in the study using non-probability consecutive sampling. Canals were randomly allocated into two groups i.e. K-3 and ProTaper. Changes in inner and outer walls of canals were measured using Vixwin software at 1mm, 4mm, 7mm and 10mm from the apex. SPSS 20 was used for data analysis. Results: Of the 214 canals, 107(50%) were assigned to each group. No statistically significant difference was found in the remaining dentine thickness at 1mm, 4mm, 7mm and 10mm from the apex of the teeth prepared with in K-3 versus ProTapers system (p>0.05). Conclusion: The remaining dentine thickness of the root canals prepared with K-3 files was similar to that of canals prepared with ProTaper files.