Apical extrusion of debris during root canal preparation using a novel nickel-titanium file system: WaveOne gold.

AIM

This study was intended to evaluate the amount of apically extruded debris following root canal preparation with three different instrumentation systems.

MATERIALS AND METHODS

Sixty mandibular incisor teeth were selected and randomly divided into three groups ( = 20/group) according to the instrumentation system used: the ProTaper Next (PTN; Dentsply Maillefer, Ballaigues, Switzerland), the Twisted File Adaptive (TFA; SybronEndo, Orange, CA, USA), and the WaveOne Gold (WOG; Dentsply Maillefer, Ballaigues, Switzerland). All apically extruded debris was collected and dried in preweighed glass vials. The mean weight of the apically extruded debris was obtained using a microbalance. The time for root canal preparation was also recorded. The data were analyzed using a one-way analysis of variance.

RESULTS

The mean weights of apically extruded debris were 0.00035 ± 0.00014 g (PTN); 0.00023 ± 0.0001 g (TFA); and 0.00019 ± 0.0001 g (WOG) ( < 0.01). The mean preparation time value was 301,13 ± 62.14 s (PTN); 234.27 ± 34.88 s (TFA); and 239.8 ± 58.6 s (WOG) ( < 0.05).

CONCLUSIONS

The PTN system extruded more debris than the TFA and WOG systems. The TFA and WOG systems were faster than the PTN system.