Biomedical Engineering Reference
In-Depth Information
Figure 13.9 Enhanced growth of preosteoblast cells on nanostructured
titanium (left) as compared to coarse-grained one (right)
[17].
Bioactivity of titanium can be enhanced further by a combination
of coating techniques, such as micro-arc oxidation (MAO), anodizing,
and coating with hydroxyapatite (Fig. 13.10) [32, 33]. When HA was
deposited on a MAO-treated surface, bioactivity was higher than in
the case when only surface treatment was performed.
Figure 13.10 SEM micrographs of surface-modiied titanium implants:
Morphology of MAO-treated surface (left top), anodized
surface (right top) and cross-sectional view of HA coating
on Ti substrate (left bottom) [32, 33].
The potential for using Mg alloys in bioresorbable vascular
stents or bone implants has recently attracted a huge interest of
 
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