Capar Ismail Davut, Ertas Huseyin, Arslan Hakan
Department of Endodontics, Faculty of Dentistry, İzmir Katip Çelebi University, İzmir, Turkey.
Aust Endod J. 2015 Apr;41(1):24-8. doi: 10.1111/aej.12067. Epub 2014 Apr 2.
New files (ProTaper Next/HyFlex/OneShape) are made from novel nickel-titanium (NiTi) alloys/treatments. The purpose of this study was to compare the cyclic fatigue resistance of these new instruments with that of Revo-S instruments. Four groups of 20 NiTi endodontic instruments were tested in steel canals with a 3 mm radius and a 60° angle of curvature. The cyclic fatigue of the following NiTi instruments with a tip size 25 and 0.06 taper that were manufactured with different alloys was tested: ProTaper Next X2 (M-Wire), OneShape (conventional NiTi), Revo-S Shaping Universal (conventional NiTi) and HyFlex 25/0.6 (controlled memory NiTi wire). A one-way anova and post-hoc Tukey's test (α = 0.05) revealed that the HyFlex files had the highest fatigue resistance and the Revo-S had the least fatigue resistance among the groups (P < 0.001).
新型锉（ProTaper Next/HyFlex/OneShape）由新型镍钛（NiTi）合金/处理工艺制成。本研究的目的是比较这些新型器械与Revo-S器械的抗循环疲劳性能。将四组每组20根NiTi根管器械在半径为3mm、曲率为60°的钢制根管中进行测试。测试了以下不同合金制造的尖端尺寸为25、锥度为0.06的NiTi器械的循环疲劳性能：ProTaper Next X2（M-Wire）、OneShape（传统NiTi）、Revo-S Shaping Universal（传统NiTi）和HyFlex 25/0.6（可控记忆NiTi丝）。单因素方差分析和事后Tukey检验（α = 0.05）显示，HyFlex锉在各组中具有最高的抗疲劳性能，而Revo-S的抗疲劳性能最低（P < 0.001）。
