Tocci Luigi, Plotino Gianluca, Al-Sudani Dina, Rubini Alessio Giansiracusa, Sannino Gianpaolo, Piasecki Lucila, Putortì Ermanno, Testarelli Luca, Gambarini Gianluca
Department of Endodontics, "Sapienza" University of Rome Italy.
J Oral Maxillofac Res. 2015 Mar 30;6(1):e6. doi: 10.5037/jomr.2014.6106. eCollection 2015 Jan-Mar.
The aim of the present study was to evaluate the cutting efficiency of two new reciprocating instruments, Twisted File Adaptive and WaveOne Primary.
10 new Twisted File Adaptive (TF Adaptive) (SybronEndo, Glendora, CA, USA) and 10 new WaveOne Primary files (Dentsply Maillefer, Ballaigues, Switzerland) were activated using a torque-controlled motor, respectively TFA motor (SybronEndo, Glendora, CA, USA) and Silver motor (VDW, Munich, Germany). The device used for the cutting test consisted on a mainframe to which a mobile plastic support for the hand-piece is connected and a stainless-steel block containing a Plexiglas block against which the cutting efficiency of the instruments was tested. The length of the block cut in 1 minute was measured in a computerized program with a precision of 0.1 mm. Mean and standard deviations of each group were calculated and data were statistically analyzed with one-way ANOVA and Bonferroni t test (P < 0.05).
TF Adaptive displayed significantly greater maximum penetration depth than WaveOne Primary (P < 0.05). In fact, TF Adaptive instruments (Group 1) cut the Plexiglas block to a mean depth of 8.7 (SD 0.5) mm, while WaveOne Primary instruments cut the Plexiglas block to a mean depth of 6.4 (SD 0.3) mm.
Twisted File Adaptive instruments demonstrated statistically higher cutting efficiency than WaveOne instruments.
本研究旨在评估两种新型往复式器械Twisted File Adaptive和WaveOne Primary的切割效率。
分别使用扭矩控制马达激活10支新型Twisted File Adaptive（TF Adaptive）锉（美国加利福尼亚州格伦多拉市SybronEndo公司）和10支新型WaveOne Primary锉（瑞士巴拉格市登士柏美福公司），即分别使用TFA马达（美国加利福尼亚州格伦多拉市SybronEndo公司）和Silver马达（德国慕尼黑市VDW公司）。用于切割测试的装置包括一个主机，其上连接有用于手机的可移动塑料支架，以及一个包含有机玻璃块的不锈钢块，在该有机玻璃块上测试器械的切割效率。在一个精确到0.1毫米的计算机程序中测量1分钟内切割的块的长度。计算每组的均值和标准差，并使用单因素方差分析和Bonferroni t检验对数据进行统计学分析（P < 0.05）。
TF Adaptive显示出比WaveOne Primary显著更大的最大穿透深度（P < 0.05）。事实上，TF Adaptive器械（第1组）将有机玻璃块切割到平均深度8.7（标准差0.5）毫米，而WaveOne Primary器械将有机玻璃块切割到平均深度6.4（标准差0.3）毫米。
Twisted File Adaptive器械在统计学上显示出比WaveOne器械更高的切割效率。
