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Welding Characteristics of Rapid Palatal Expander for Teeth Calibration using a Continuous Wave Nd:YAG Laser  

Yoo, Young-Tae (Department of Mechatronics Engineering, Chosun Univ.)
Yang, Yun-Seok (Department of Mechatronics Engineering, Chosun Univ.)
Shin, Ho-Jun (Laser Manufacturing Laboratory, Chosun Univ.)
Publication Information
Journal of the Korean Society for Precision Engineering / v.27, no.2, 2010 , pp. 40-49 More about this Journal
Abstract
The Purpose of this paper is to weld a rapid palatal expander using a continuous wave Nd:YAG laser. The rapid palatal expander has become a useful treatment method for severe maxillary transverse deficiencies and posterior crossbites. Rapid maxillary expansion is a well-established method to correct transverse maxillary deficiency and arch length discrepancy. The major process parameters studied in the present laser welding experiment were the positions of focus, laser power and travel speed of laser beam. We measured the fusion zone size and its shape using an optical microscope for the observation of cross-sectional area and tension stress of a rapid palatal expander welded. Through the experimental investigation, the optimum speeds and power of laser without deficiencies of weld cross-sectional area were obtained.
Keywords
CW Nd:YAG Laser; Rapid Palatal Expander; Teeth Calibration; Tensile Stress; Overlap Ratio;
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Times Cited By KSCI : 6  (Citation Analysis)
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