Comparison of Shaping Ability of Five Nickel-Titanium Rotary Instruments in Simulated Curved Canals
نویسندگان
چکیده
This study compared the shaping ability of five Ni-Ti rotary files (ProTaper Universal, Reciproc, Hyflex CM, ProTaper Next and TF Adaptive) in simulated root canals. Each group consisted of 10 root canals. Preand post-instrumentation photographs were taken using a precise camera and superimposed with Photoshop. Material removal from the inner and outer canal walls, transportation and centering ability were measured with Image Pro Plus software. The preparation time was compared. TF Adaptive produced less transportation at the apical curvature, followed by Reciproc and Hyflex CM. There were no significant differences in coronal curvature transportation (p>0.05) among the five groups. ProTaper Next and Hyflex CM had a significantly higher cutting efficacy than ProTaper Universal, Reciproc or TF Adaptive (p<0.05). In general, all five instruments respected the original canal curvature well and were safe to use.
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