Radiographic technical quality of root canal treatment performed by a new rotary single-file system.

Aim: The aim of the present study was to evaluate radiographically the technical quality of root canal filling performed by postgraduate students with a new single-file Nickel-Titanium System (F6 Skytaper Komet) in clinical practice.

Methods: Records of 74 patients who had received endodontic treatment by postgraduate students at the School of Dentistry, Faculty of Medicine, University of Pavia in the period between September 2015 and April 2016 were collected and examined: the final sample consisted 114 teeth and 204 root canals. The quality of endodontic treatment was evaluated by examining the length of the filling in relation to the radiographic apex, the density of the obturation according to the presence of voids and the taper of root canal filling. Chi-squared analysis was used to determine statistically significant differences between the technical quality of root fillings according to tooth's type, position and curvature.

Results: The results showed that 75,49%, 82,84% and 90,69% of root filled canals had adequate length, density and taper respectively.

Conclusions: Overall, the technical quality of root canal fillings performed by postgraduates students was acceptable in 60,78% of the cases.