Inter J Stomatol ›› 2009, Vol. 36 ›› Issue (3): 358-360.doi: 10.3969/j.issn.1673-5749.2009.03.033
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CHEN Xiao-chun, CHEN Xin-mei
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Abstract: Although the nickel-titanium(Ni-Ti) alloy with super-elastic property is more and more used in endodontics, it has been reported that rotary Ni-Ti instruments are more prone to intracanal fracture compared with stainless steel instruments. These unexpected fractures occur without any visible changes to the instruments which produce a prominence problem creating a major obstacle to normally routine therapy. Many studies showed that the presence of defects on and in the Ni-Ti instruments before used restrict clinical application. In recent years, considerable attempt has been undertaken to improve these condition and produced more flexible and resistant Ni-Ti endodontic instruments, which may minimize the occurrence of fractures. This article reviewed the development of manufacturing methods of Ni-Ti endodontic instrument.
Key words: nickel-titanium instrument, manufacturing method, fracture, surface treatment
CHEN Xiao-chun, CHEN Xin-mei. Research progress on manufacturing factors of the fracture about nickel-titanium [J].Int J Stomatol, 2009, 36(3): 358-360.
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URL: https://www.gjkqyxzz.cn/EN/10.3969/j.issn.1673-5749.2009.03.033
https://www.gjkqyxzz.cn/EN/Y2009/V36/I3/358
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