Measurement on the fatigue behavior of Nickel Titanium Rotary Instrument
Date Issued
2006
Date
2006
Author(s)
Li, Chun-Chieh
DOI
zh-TW
Abstract
Measurement on the fatigue behavior of Nickel Titanium Rotary Instrument
Abstract
Recently, the revolutionary development of incorporating Ni-Ti into endodontic files has greatly transformed the methods of root canal instrumentation. Endodontic instruments upon rotation are subjected to both tensile stress and compressive stress in curved canals. This stress is localized at the point of curvature. This is the most destructive mode of cyclic fatigue. The present experiment utilizes dynamic measurement to research the fatigue property of Ni-Ti instrument. We expect to find the fracture mechanisms of Ni-Ti rotary instrument, and lead to recommendations for preventing instrument separation.
Keywords：NiTi instrument, Cyclic fatigue, Fracture mechanisms
Subjects
鎳鈦根管銼
週期性疲勞
斷裂機制
NiTi instrument
Cyclic fatigue
Fracture mechanisms
Type
thesis
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