Dental Materials Research Center, Department of Endodontics, Isfahan University of Medical Science, Isfahan, Iran.
Dental Research Center, Department of Endodontics, School of Dentistry, Isfahan University of Medical Science, Isfahan, Iran.
J Endod. 2018 Dec;44(12):1788-1791. doi: 10.1016/j.joen.2018.09.011. Epub 2018 Nov 1.
The purpose of this study was to compare canal transportation and the centering ability of Reciproc (VDW, Munich, Germany), WaveOne (Dentsply Maillefer, Ballaigues, Switzerland), and EdgeFile (EdgeEndo, Albuquerque, NM) rotary systems using cone-beam computed tomographic imaging.
Ninety mesiobuccal mandibular first molar uncalcified canals with at least a 19-mm length, a canal curvature of 15°-30° (the Schneider method), and a mature apex were selected. Canals were randomly divided into 3 groups of 30 teeth, and canal preparation with the Reciproc, WaveOne, and EdgeFile systems was performed according to the manufacturers' instructions. Cone-beam computed tomographic images were taken before and after instrumentation in the same position. Apical transportation was calculated in the distances of 2, 3, and 4 mm from the apex. Kruskal-Wallis and Mann-Whitney U tests were used to statistically analyze the data.
The mean canal transportation was significantly lower with EdgeFile (P < .001) followed by the WaveOne rotary system. Moreover, the centering ability of the EdgeFile system was higher than that of the WaveOne and Reciproc systems.
The EdgeFile rotary system showed the lowest transportation in both the mesiodistal and buccolingual directions and the highest centering ability. The Reciproc system showed the highest transportation and the lowest centering ability.
本研究的目的是通过锥形束计算机断层扫描成像比较 Reciproc（VDW，慕尼黑，德国）、WaveOne（登士柏迈尔乐，Ballaigues，瑞士）和 EdgeFile（EdgeEndo，阿尔伯克基，NM）旋转系统的根管输送和中心定位能力。
选择 90 颗未钙化的下颌第一磨牙近中颊根管，至少 19mm 长，根管弯曲度为 15°-30°（施耐德法），根尖成熟。将根管随机分为 3 组，每组 30 颗牙，按照制造商的说明使用 Reciproc、WaveOne 和 EdgeFile 系统进行根管预备。在相同位置，在器械前后拍摄锥形束计算机断层扫描图像。在距根尖 2、3 和 4mm 的距离计算根尖输送。采用 Kruskal-Wallis 和 Mann-Whitney U 检验对数据进行统计学分析。
EdgeFile（P<0.001）和 WaveOne 旋转系统的根管输送明显较低，此外，EdgeFile 系统的中心定位能力高于 WaveOne 和 Reciproc 系统。
EdgeFile 旋转系统在颊舌向和近远中向的输送量最低，中心定位能力最高。Reciproc 系统的输送量最高，中心定位能力最低。
