Abstract
Abstract Surface modification has been widely applied to improve bioactivity of biomedical implants. A micro-nanostructured bioactive surface was successfully fabricated on titanium. Firstly, Ti6Al4V sheets with micro structure were prepared by Selective Laser Melting (SLM) and acid etching. Then TiO2 nanotubes were constructed on titanium surfaces via anodic oxidation. The wettability and bioactivity were respectively investigated by measurement of surface contact angle and simulated body fluid soaking test. Results showed that after anodic oxidation the surface turned to super-hydrophilic with the water contact angle of nearly 0° and more hydroxyapatite deposition formed on the surface, which indicated bioactivity improvement.
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