Dincer Asiye Nur, Guneser Mehmet Burak, Arslan Dilara
Department of Endodontics, Faculty of Dentistry, Bezmialem Vakif University, Istanbul, Turkey.
J Conserv Dent. 2017 Sep-Oct;20(5):322-325. doi: 10.4103/JCD.JCD_407_16.
This study was intended to evaluate the amount of apically extruded debris following root canal preparation with three different instrumentation systems.
Sixty mandibular incisor teeth were selected and randomly divided into three groups ( = 20/group) according to the instrumentation system used: the ProTaper Next (PTN; Dentsply Maillefer, Ballaigues, Switzerland), the Twisted File Adaptive (TFA; SybronEndo, Orange, CA, USA), and the WaveOne Gold (WOG; Dentsply Maillefer, Ballaigues, Switzerland). All apically extruded debris was collected and dried in preweighed glass vials. The mean weight of the apically extruded debris was obtained using a microbalance. The time for root canal preparation was also recorded. The data were analyzed using a one-way analysis of variance.
The mean weights of apically extruded debris were 0.00035 ± 0.00014 g (PTN); 0.00023 ± 0.0001 g (TFA); and 0.00019 ± 0.0001 g (WOG) ( < 0.01). The mean preparation time value was 301,13 ± 62.14 s (PTN); 234.27 ± 34.88 s (TFA); and 239.8 ± 58.6 s (WOG) ( < 0.05).
The PTN system extruded more debris than the TFA and WOG systems. The TFA and WOG systems were faster than the PTN system.
本研究旨在评估使用三种不同根管预备系统进行根管预备后根尖部挤出碎屑的量。
选取60颗下颌切牙，根据所使用的根管预备系统随机分为三组（每组20颗）：ProTaper Next（PTN；登士柏迈尔牙科，瑞士巴拉格）、Twisted File Adaptive（TFA；美国加利福尼亚州奥兰治SybronEndo公司）和WaveOne Gold（WOG；登士柏迈尔牙科，瑞士巴拉格）。收集所有根尖部挤出的碎屑，并在预先称重的玻璃小瓶中干燥。使用微量天平获得根尖部挤出碎屑的平均重量。同时记录根管预备时间。采用单因素方差分析对数据进行分析。
根尖部挤出碎屑的平均重量分别为0.00035±0.00014克（PTN）、0.00023±0.0001克（TFA）和0.00019±0.0001克（WOG）（P<0.01）。平均预备时间分别为301.13±62.14秒（PTN）、234.27±34.88秒（TFA）和239.8±58.6秒（WOG）（P<0.05）。
PTN系统挤出的碎屑比TFA和WOG系统更多。TFA和WOG系统比PTN系统更快。
