Edition V02N01 | Year 2012 | Editorial Original Article | Pages 70 to 73
Introduction: The objective of this work was to compare the time required for preparation of simulated root canals, as well as the deviation in degrees caused by the Twisted File and Endowave rotary systems. Methods: This study was conducted on thirty acrylic blocks with simulated root canals with 30º curvature, which were divided into two groups: Group I – Twisted File system; Group 2 – EndoWave system. The preparation was conducted using the X-Smart motor with 1.4 N/cm of torque at a speed of 250 rpm. The blocks with the instruments were radiographed before and after preparation. The radiographs were then digitized for analysis of the angle formed before and after preparation, using the Image Tools software. The preparation time, number of deformed and fractured instruments and deviation were analyzed. Results: The results showed that preparation using the Endowave system was significantly faster (p > 0.05) and exhibited less fractures when compared to the Twisted File system. As to the apical deviation, both presented significant deviations (p < 0.05), especially on the inner wall, without significant difference (p > 0.05) between groups. Conclusions: It was concluded that preparation of simulated root canals using the Endowave system was faster than the Twisted File, with a lower fracture rate.
Sant’Anna-Junior A, Duarte MAH, Yoshida JT, Bernardes JS, Minotti-Bonfante PG, Só MV. Comparison of the preparation time and deviation caused by Twisted File and Endowave systems in simulated root canals. Dental Press Endod. 2012 Jan-Mar;2(1):70-3.