Chinese Journal of Tissue Engineering Research ›› 2010, Vol. 14 ›› Issue (12): 2183-2186.doi: 10.3969/j.issn.1673-8225.2010.12.023

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Stainless steel archwires friction after heat treatment

Zhang Min1, Hou Lu1, Xu Shi-qian2   

  1. 1 Second Clinical Medical College, Harbin Medical University, Harbin   150001, Heilongjiang Province, China; 2 Harbin Industrial University, Harbin   150001, Heilongjiang Province, China
  • Online:2010-03-19 Published:2010-03-19
  • Contact: Hou Lu, Chief physician, Second Clinical Medical College, Harbin Medical University, Harbin 150001, Heilongjiang Province, China
  • About author:Zhang Min★, Studying for master’s degree, Attending physician, Second Clinical Medical College, Harbin Medical University, Harbin 150001, Heilongjiang Province, China zhangmin81160125@yahoo.com.cn
  • Supported by:

    Science and Technology Project of Heilongjiang Province, No. 2006G0945-00*

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Abstract:

BACKGROUND: Friction is a hot topic of orthodontic science; however, changes between archwire and bracket before and after heat treatment have been less reported yet.
OBJECTIVE: To discuss the influence of the orthodontic stainless steel archwires after heat treatment at a low temperature on friction between the archwires and brackets.
METHODS: Orthodontic stainless steel archwires were heated at a low temperature. Surface morphology was observed under scanning electron microscope, the direction of drawing was then determined. Friction was measured before and after treatment.
RESULTS AND CONCLUSION: Scanning electron microscope demonstrated that surface of archwire which were not heated changed less. The friction was significantly decreased after heat treatment. Further analysis demonstrated that there was no significant difference in the friction between heated and non-heated archwires; moreover, there was also no significant difference of the same archwire before and after heat treatment (P > 0.05). Stainless steel could not increased the friction between archwires and bracket following heat treatment.

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