Comparison of cyclic fatigue resistance of novel nickel-titanium rotary instruments

被引：38
作者：
Capar, Ismail Davut [1 ]
Ertas, Huseyin [1 ]
Arslan, Hakan [2 ]
机构：
[1] Izmir Katip Celebi Univ, Dept Endodont, Fac Dent, TR-35620 Izmir, Turkey
[2] Ataturk Univ, Fac Dent, Dept Endodont, Erzurum, Turkey
来源：
AUSTRALIAN ENDODONTIC JOURNAL | 2015年 / 41卷 / 01期
关键词：
cyclic fatigue; heat treatment; nickel-titanium files; ProTaper Next; rotary; ROOT-CANAL INSTRUMENTS; ENDODONTIC INSTRUMENTS; MECHANICAL-PROPERTIES; CLINICAL-USE; FILES; NITI; WIRE; FRACTURE; DEFECTS; ALLOYS;
D O I：
10.1111/aej.12067
中图分类号：
R78 [口腔科学];
学科分类号：
1003 ;
摘要：
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 3mm radius and a 60 degrees 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 (=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).
引用
收藏
页码：24 / 28
页数：5
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