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KMID : 0362220130400030179
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Journal of The Korean Research Society for Dental Materials
2013 Volume.40 No. 3 p.179 ~ p.184
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Bioactivity of Ti-27Nb-10Ta-3.5Zr Alloy Modified by Anodic Oxidation and Precalcification Treatments
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Jeon Woo-Yong
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Abstract
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This study was performed to investigate the bioactivity of Ti-24Nb-17Ta-5Zr alloy modified by an anodic oxidation and an precalcification treatments. Ti-27Nb-10Ta-3.5Zr alloy was anodized to form the nanotubular TiO2 layer. To increase the bioactivity, calcium phosphate deposition was carried out by an immersion treatment in 0.5 M CaHPO4 solution at 90℃ for 30 min . Bioactivities were evaluated by the apatite forming ability in simulated body fluid (SBF) for 10 days. Nanotubular TiO2 layer showed the dense and self-organized structure. Nanotubes showed the separately connected tube structures and it was opened and enlarged as going down. The bioactivity of nanotubular TiO2 layer on Ti-27Nb-10Ta-3.5Zr alloy was improved with precalcification treatment in 0.5 M CaHPO4 at 90℃. These results suggest that the bioactivity of Ti-27Nb-10Ta-3.5Zr alloy could be improved with the formation of nanotubular TiO2 layer and the precalcification treatment in 90℃ 0.5 M CaHPO4 solution.
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KEYWORD
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Ti-27Nb-10Ta-3.5Zr alloy, nanotubular TiO2 layer, precalcification treatment
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