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http://dx.doi.org/10.5695/JKISE.2010.43.3.132

Surface Characteristics of Polymer Coated NiTi Alloy Wire for Orthodontics  

Cho, Joo-Young (Department of Dental Materials & Research Center of Nano-Interface Activation for Biomaterials, School of Dentistry, Chosun University)
Kim, Won-Gi (Department of Dental Materials & Research Center of Nano-Interface Activation for Biomaterials, School of Dentistry, Chosun University)
Choi, Hwan-Suk (Department of Dental Materials & Research Center of Nano-Interface Activation for Biomaterials, School of Dentistry, Chosun University)
Lee, Ho-Jong (Department of Materials Science & Metallurgical Engineering, Sunchon National University)
Choe, Han-Cheol (Department of Dental Materials & Research Center of Nano-Interface Activation for Biomaterials, School of Dentistry, Chosun University)
Publication Information
Journal of the Korean institute of surface engineering / v.43, no.3, 2010 , pp. 132-141 More about this Journal
Abstract
NiTi alloy has been used for orthodontic wire due to good mechanical properties, such as elastic strength and frictional resistance, combined with a high resistance to corrosion. Recently, these wire were coated by polymer and ceramic materials for aesthetics. The purpose of this study was to investigate surface characteristics of polymer coated NiTi alloy wire for orthodontics using various instruments. Wires (round type and rectangular type) were used, respectively, for experiment. Polymer coating was carried out for wire. Specimen was investigated with field emission scanning electron microscopy(FE-SEM), energy dispersive x-ray spectroscopy(EDS) and atomic force microscopy(AFM). The phase transformation of non-coated NiTi wire from martensite to austenite occurred at the range of $14{\sim}15^{\circ}C$, in the case of coated wire, it occurred at the range of $16{\sim}18^{\circ}C$. Polymer coating on NiTi wire surface decreased the surface defects such as scratch which was formed at severe machined surface. From the AFM results, the average surface roughness of non-coated and coated NiTi wire was 13.1 nm, and 224.5 nm, respectively. From convetional surface roughness test, the average surface roughness of non-coated and coated NiTi wire was $0.046{\mu}m$, and $0.718{\mu}m$, respectively.
Keywords
NiTi wire; TMDSC; Polymer; Surface roughness; Phase transformation;
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Times Cited By KSCI : 2  (Citation Analysis)
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1 W. G. Kim, D. Y. Kim, H. C. Choe, J. Kor. Inst. Surf. Eng., 41 (2008) 147.   과학기술학회마을   DOI
2 H. Y. Yang, Advanced Metallic Materials, MoonUnDang Co., Seoul, Korea, (1995) 494.
3 M. Santoro, D. N. Beshers, Am J. Orthod. Dentofac. Orthop., 118 (2000) 685.   DOI
4 D. A. Jones, Principles and Prevention of Corrosion, Maxwell Macmillan International Editions, New York (1992) 243.
5 W. G. Kim, D. Y. Kim, H. C. Choe, J. Kor. Inst. Surf. Eng., 41 (2008) 163.   과학기술학회마을   DOI
6 J. R. Bednar, G. W. Gruendeman, J. L. Sandrik, Am. J. Orthod., 100 (1991) 513.   DOI
7 J. G. Stannard, J. M. Gau, M. A. Hanna, Am. J. Orthod., 89 (1986) 485.   DOI
8 A. Kaplila, P. V. Angolkar, M. G. Duncanson, R. S. Nanda, Am. J. Orthod., 98 (1990) 117.   DOI
9 P. V. Angolkar, S. Kaplila, M. G. Duncanson, R. S. Nanda, Am. J. Orthod., 98 (1990) 499.   DOI
10 C. A. Frank, R. J. Nikolai, Am. J. Orthod., 78 (1980) 593.   DOI
11 K. L. Baker, L. G. Nieberg, A. D. Weimer, M. Hanna, Am. J. Orthod. Dentofac. Orthop., 91 (1987) 302.
12 G. Andreasen, H. Heilman, D. Krell, Angle Orthod., 55 (1985) 120.