양극산화처리된 임플란트 고정체의 전기화학적 특성 (Electrochemical Characteristics of Anodized Dental Implant Fixture)

서지정보

· 발행기관 : 대한치과재료학회
· 수록지 정보 : 대한치과재료학회지 / 35권 / 4호 / 369 ~ 380페이지
· 저자명 : 정해만, 신정제, 김원기, 정용훈, 김병훈, 최한철, 고영무

초록

The electrochemical characteristics of anodized dental implant fixture have been researched using 5 groups of fixture. It has different surface treatment, respectively. Estimation of electrochemical characteristics of anodized dental implant in 1M H₃PO₄ electrolytes have been researched by using electrochemical methods. The specimen was used for corrosion test in 0.9 % NaCl solution at 36.5 ± 1℃. The surface morphology were observed using field emission scanning electron microscopy (FESEM) and energy dispersive x-ray spectroscopy(EDX). The electrochemical stability was investigated using potentiosat (EG&G Co, 263A) and AC impedance tester. The corrosion surface were observed using field emission scanning electron microscopy(FE-SEM).
RBM treated samples showed more smooth surface than SLA treated samples, the SLA treated
sample was formed deep and fine surface. The corrosion resistance of RBM treated samples was higher than that of SLA treated sample. In case of samples with anodizing treatment, pores with 1-2㎛ size were formed on the basted fixture surface, and anodized fixture surface showed smooth and decreased surface roughness compared to non-anodized fixture surface. Anodic polarization curves shifted to left and down direction due to thick oxide film formation and anodizing treated samples had lower value of current density and higher polarization resistance compared to non-anodized samples.
In conclusion, anodized fixture showed higher corrosion resistance than as-received samples.
Therefore, the corrosion resistance of implant fixture depends on degree of the stable TiO₂ formation on the surface and on the kinds of surface treatment, like a RBM and SLA.

영어초록

The electrochemical characteristics of anodized dental implant fixture have been researched using 5 groups of fixture. It has different surface treatment, respectively. Estimation of electrochemical characteristics of anodized dental implant in 1M H₃PO₄ electrolytes have been researched by using electrochemical methods. The specimen was used for corrosion test in 0.9 % NaCl solution at 36.5 ± 1℃. The surface morphology were observed using field emission scanning electron microscopy (FESEM) and energy dispersive x-ray spectroscopy(EDX). The electrochemical stability was investigated using potentiosat (EG&G Co, 263A) and AC impedance tester. The corrosion surface were observed using field emission scanning electron microscopy(FE-SEM).
RBM treated samples showed more smooth surface than SLA treated samples, the SLA treated
sample was formed deep and fine surface. The corrosion resistance of RBM treated samples was higher than that of SLA treated sample. In case of samples with anodizing treatment, pores with 1-2㎛ size were formed on the basted fixture surface, and anodized fixture surface showed smooth and decreased surface roughness compared to non-anodized fixture surface. Anodic polarization curves shifted to left and down direction due to thick oxide film formation and anodizing treated samples had lower value of current density and higher polarization resistance compared to non-anodized samples.
In conclusion, anodized fixture showed higher corrosion resistance than as-received samples.
Therefore, the corrosion resistance of implant fixture depends on degree of the stable TiO₂ formation on the surface and on the kinds of surface treatment, like a RBM and SLA.

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