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Surface Characteristics and Electrochemical Behaviors of TiN and ZrN Coated Orthodontic Mini-screw
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 Title & Authors
Surface Characteristics and Electrochemical Behaviors of TiN and ZrN Coated Orthodontic Mini-screw
Kim, S.J.; Moon, Y.P.; Park, G.H.; Jo, H.H.; Kim, W.G.; Son, M.K.; Choe, H.C.;
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 Abstract
The dental orthodontic mini-screw requires good mechanical properties and high corrosion resistance for implantation in the bone. The purpose of this study was to investigate the electrochemical characteristics of TiN and ZrN coated orthodontic mini-screws, mini-screws were used for experiment. Ion plating was carried out for mini-screw using Ti and Zr coating materials with nitrogen gas. Ion plated surface of each specimen w as o bserved with f ield emission scanning e lectron microscopy ( FE-SEM), e nergy dispersive x-ray spectroscopy (EDX), and electrochemical tester. The surface of TiN and ZrN coated mini-screw were more smooth than that of other kinds of non-coated mini-screw due to dercrease of machined defects. The corrosion current density of the TiN and ZrN coated mini-screw decreased compared to non-coated sample. The corrosion potential of TiN and ZrN coated mini-screw were higher than that of non-coated mini-screw in 0.9% NaCl solution. The pitting corrosion resistance increased in the order of ZrN coated, TiN coated and non-coated wire. Pitting potential of ZrN coated mini-screw was the highest in the other specimens.
 Keywords
Orthodontic mini-screw;TiN coating;ZrN coating;Electrochemical characteristics;Ion-plating;
 Language
Korean
 Cited by
1.
Biologic stability of plasma ion-implanted miniscrews,;;;;;;

대한치과교정학회지, 2013. vol.43. 3, pp.120-126 crossref(new window)
1.
Biologic stability of plasma ion-implanted miniscrews, The Korean Journal of Orthodontics, 2013, 43, 3, 120  crossref(new windwow)
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