Centering Ability of ProTaper Next and WaveOne Classic in J-Shape Simulated Root Canals

الملخص EN

Introduction.

The aim of this study was to evaluate and compare the shaping and centering ability of ProTaper Next (PTN; Dentsply Maillefer, Ballaigues, Switzerland) and WaveOne Classic systems (Dentsply Maillefer) in simulated root canals.

Methods.

Forty J-shaped canals in resin blocks were assigned to two groups (n=20 for each group).

Photographic method was used to record pre- and postinstrumentation images.

After superimposition, centering and shaping ability were recorded at 9 different levels from the apex using the software Autocad 2013 (Autodesk Inc., San Rafael, USA).

Results.

Shaping procedures with ProTaper Next resulted in a lower amount of resin removed at each reference point level.

In addition, the pattern of centering ability improved after the use of ProTaper Next in 8 of 9 measurement points.

Conclusions.

Within the limitations of this study, shaping procedures with ProTaper Next instruments demonstrated a lower amount of resin removed and a better centering ability than WaveOne Classic system.