WaveOne单支锉的根管预备效果及碎屑推出根尖孔评价

目的评价新型往复运动系统Wave One单支锉的根管预备效率及预备过程中,根尖部碎屑排出情况。方法选择40颗单根管下颌前磨牙,随机分成4组,分别用K-File、BLx、Pro Taper Universal及Wave One四种器械根管预备,收集从根尖孔排出的牙本质碎屑,称重,再结合各组根管的预备时间,进行综合比较评价。结果 K-File组产生的根尖推出碎屑量最多,Waveone组次之,除BLx组与Pro Taper组之间无显著差异(P>0.05),其他各组之间存在统计学差异(P<0.05)。Wave One组所需预备时间最短,其次是BLx组、Pro Taper组,K-File组最慢,各组间差异有统计学意义(P<0.05)。结论 Wave One在根尖推出碎屑量方面,相较于手用K-File具有优势,但较其他两种传统的机用镍钛器械多。与其他三种器械相比,Wave One具有最佳的根管预备效率。

Evaluation on the efficiency of instrumentation and the amount of extruded apical debris of WaveOne system

Objective To evaluate the efficiency of instrumentation and the amount of extruded apical debris with new WaveOne sys-tem in preparing root canals. Methods 40 mandible teeth with single root canal were randomly divided into 4 groups and prepared by K-file, BLx, ProTaper Universal and WaveOne, respectively. The extruded apical debris during the preparation were collected and measured. Then combined with the time for preparation, all data were comprehensively compared and evaluated. Results The amount of apical debris of K-File group was the largest, followed by the WaveOne group. There was no significant difference between the BLx and ProTaper groups (P>0. 05), and there were significant differences among the other groups (P<0. 05). The WaveOne group took the shortest time to prepare, followed by the BLx group, then the ProTaper group, the K-File group needed the most time, and the differences among groups had statistical significance (P<0. 05). Conclusion WaveOne has advantages in the amount of the extruded apical debris compared with the hand K-File, but doesn’ t surpass the other two kinds of traditional titanium with Niti instruments. Compared with the other three instruments, WaveOne has the best root canal preparation efficiency.