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Corrosion Characteristics of TiN and ZrN Coated Orthodontic Brackets
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 Title & Authors
Corrosion Characteristics of TiN and ZrN Coated Orthodontic Brackets
Kim, W.G.; Kim, D.Y.; Choe, H.C.;
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The dental orthodontic bracket requires good mechanical properties, such as elastic strength and frictional resistance, combined with a high resistance to corrosion. The objective of this study was to investigate the effects of TiN and ZrN coating on corrosion resistance of orthodontic brackets using various electrochemical methods. Brackets manufactured by Ormco Co. were used, respectively, for experiment. Ion plating was carried out for coatings of bracket using Ti and Zr coating materials with nitrogen gas. Ion plated surface of each specimen was observed with field emission scanning electron microscopy(FE-SEM), energy dispersive Xray spectroscopy(EDS) and electrochemical tester. The corrosion potential of the TiN and ZrN coated bracket was comparatively high. The current density of TiN and ZrN coated bracket was smaller than that of non-coated bracket in 0.9% NaCl solution. Pit nucleated at angle of bracket slot.
Orthodontic bracket;TiN coating;ZrN coating;Surface treatment;
 Cited by
폴리머 코팅된 NiTi합금 교정선의 표면특성,조주영;김원기;최환석;이호종;최한철;

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