Influence of proper or reciprocating optimum torque reverse kinematics on cyclic fatigue of four single files

被引：4

作者：

Pedulla, Eugenio ^{[1
]}

Ambu, Emanuele ^{[2
]}

Rovai, Fabio

Chang, Seok-Woo ^{[3
]}

Campedelli, Federico ^{[2
]}

Corsentino, Giacomo ^{[2
]}

Rapisarda, Silvia ^{[1
]}

La Rosa, Giusy R. M. ^{[1
]}

Grandini, Simone ^{[2
]}

机构：

[1] Univ Catania, Dept Gen Surg & Surg Med Specialties, Catania, Italy

[2] Univ Siena, Dept Endodont & Restorat Dent, Siena, Italy

[3] Kyung Hee Univ, Dept Conservat Dent, Seoul, South Korea

来源：

JOURNAL OF INVESTIGATIVE AND CLINICAL DENTISTRY | 2019年 / 10卷 / 03期

关键词：

differential scanning calorimetric analysis; fatigue resistance; nickel-titanium; optimum torque reverse; reciprocation; PHASE-TRANSFORMATION BEHAVIOR; CURRENT CHALLENGES; WAVEONE GOLD; NICKEL; RESISTANCE; INSTRUMENTS; MOTION; SHAPE;

D O I：

10.1111/jicd.12409

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

Aim The aim of the present study was to evaluate the resistance to cyclic fatigue of heat-treated single files used in proper or in reciprocating optimum torque reverse motions. Methods Ninety-six HyFlex electrical discharge machining (EDM), Reciproc R25 (Rec), WaveOne Primary (WO), and WaveOne Gold (WOG) Primary were used. Resistance to cyclic fatigue was determined by recording time to fracture in a stainless steel artificial canal. Differential scanning calorimetric analysis was performed. Data were analyzed by two-way analysis of variance and Bonferroni post-hoc tests at 0.05. Results In both movements, HyFlex EDM showed higher time to fracture than other files (P < 0.0001). Rec showed higher time to fracture than WO (P < 0.0001), while WOG showed higher cyclic fatigue resistance than Rec and WO with both movements (P < 0.005). Conclusions Reciprocating optimum torque reverse motion improved significantly cyclic fatigue resistance of gold and controlled memory wire single files.

引用

页数：7

共 30 条

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