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

页码：24 / 28

页数：5

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