Cyclic fatigue test on different rotary NiTi files and handling methods

  • Kim, Jae-Kwan (Department of Conservative Dentistry, College of Dentistry, Yonsei University) ;
  • Kim, Eui-Seong (Department of Conservative Dentistry, College of Dentistry, Yonsei University)
  • Published : 2003.11.01

Abstract

Endodontic rotary NiTi(Nickel-Titanium) files have several advantages, but they also have some problems. Fracture of instrument is the one of the problems. Cyclic fatigue fracture may not give a previous sign(ex, bending or distortion of the files) before it happen. It is affected by various factors. This study investigated time which takes for cyclic fatigue fracture to happen and fracture patterns with regard to different NiTi files and pecking motion.(omitted)

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