P-69 Formation of calcium phosphate on anodic titania nanotubes

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Electrochemical formation of tunable nanoscale oxide layers on titanium surfaces has recently drawn much attention in biomaterials research. By anodization in fluoride-based electrolytes it is possible to obtain self-organized and highly defined porous titania nanotube layers on titanium. These oxide nanotube layers can improve calcium phosphate formation ability and cell activity. In the current study, the formation of calcium phosphate on nanotube layers of titanium surfaces, anodized at 5 or 10 V for 60 min, was evaluated in simulated body fluids (SBF). It was also found that the thickness of the calcium phosphate layer increases alongside increases in the applied potential for anodized titanium, and the average thickness of the calcium phosphate layer on titanium anodized at 5 V and 10 V was about 170 nm and 190 nm, respectively, after immersion in SBF for 14 days.

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