Chinese Journal of Tissue Engineering Research ›› 2011, Vol. 15 ›› Issue (38): 7185-7188.doi: 10.3969/j.issn.1673-8225.2011.38.037

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Corrosion and anticorrosion of nickel-titanium arch wires in orthodontics

Pan Xiao-jing, Li Zhen-ya, Ran Hai-qun, Qi Yuan-yuan, Liu Bin   

  1. School of Stomatology, Lanzhou University, Lanzhou  730000, Gansu Province, China
  • Received:2011-03-10 Revised:2011-04-10 Online:2011-09-17 Published:2011-09-17
  • Contact: Liu Bin, Doctor, Professor, School of Stomatology, Lanzhou University, Lanzhou 730000, Gansu Province, China liubkq@lzu.edu.cn
  • About author:Pan Xiao-jing★, Studying for master’s degree, School of Stomatology, Lanzhou University, Lanzhou 730000, Gansu Province, China panxj@lzu.edu.cn
  • Supported by:

    Scientific Research Basic Fee Small Exploration Program of Ministry of Education, No. lzujbky-2011-134*; National Solid Lubrication Key Laboratory Open Topic of Lanzhou Institute of Chemical Physics of Chinese Academy of Sciences, No. 0808*; Innovation Foundation of Youth Interdisciplinary of Lanzhou University, No. 20091286*; Scientific Support Foundation of Stomatology of Lanzhou University, No. 2010-03*

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Abstract:

BACKGROUND: Orthodontics with nickel-titanium arch wires often occurs the decrease of mechanical property after clinical application, and seriously affects the effect of clinical therapy. Studies show that corrosion in oral electrolyte is one of the most reasons.
OBJECTIVE: To review the research progress on nickel-titanium arch wires in orthodontics recently at home and abroad.
METHODS: Literatures related to corrosion of nickel-titanium arch wires in orthodontics from CNKI database, PubMed database and Elsevier (ScienceDirect) database were retrieved.
RESULTS AND CONCLUSION: In complex oral environment, temperature, load, fluorinion and other factors can accelerate the corrosion of nickel-titanium arch wires, the property of nickel-titanium arch wires in orthodontics was influenced to some extent, and which reduced the mechanical properties of nickel-titanium arch wires in orthodontics, increased the roughness of surface and then prolonged the course of treatment, and increased the cost of orthodontic treatment. The release of nickel ion of nickel-titanium arch wires in orthodontics reduced its biological safety. Anticorrosion treatment can improve the corrosion resistance of nickel-titanium arch wires; surface treatment technology is mainly applied. However, safe and effective method is seldom at present, the corrosion and anticorrosion on nickel-titanium arch wires in orthodontics is needed to be further deeply studied.

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