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1. (WO2018205319) NICKEL TITANIUM ALLOY GRADIENT FLEXIBLE ROOT CANAL FILE AND MANUFACTURING METHOD THEREFOR

Pub. No.:    WO/2018/205319    International Application No.:    PCT/CN2017/086409
Publication Date: Fri Nov 16 00:59:59 CET 2018 International Filing Date: Sun May 28 01:59:59 CEST 2017
IPC: A61C 5/42
C22F 1/10
Applicants: SHENZHEN SUPERLINE TECHNOLOGY CO., LTD.
深圳市速航科技发展有限公司
Inventors: WANG, Zhong
王中
ZHOU, Jinsong
周劲送
Title: NICKEL TITANIUM ALLOY GRADIENT FLEXIBLE ROOT CANAL FILE AND MANUFACTURING METHOD THEREFOR
Abstract:
A nickel titanium alloy gradient flexible root canal file, comprising a root canal file tip part (F1), a root canal file middle part (F2) and a root canal file root part (F3) divided along the axis of the nickel titanium alloy gradient flexible root canal. The internal tissue of the root canal file tip part (F1) is a martensite M phase; the internal tissue of the root canal file middle part (F2) is an R phase; and the internal tissue of the root canal file root part (F3) is an austenite A phase. Further disclosed is a manufacturing method for the nickel titanium alloy gradient flexible root canal file. The beneficial effect is that the safety of using the file is effectively improved.