The biological aging of Ti
Photofunctionalization– Problem–solving technology
What is the biological aging of titanium
It is natural time-dependent degradation of osseointegration capability of titanium. Titanium surfaces, regardless of those for experimental or commercial use, are chemically contaminated with hydrocarbon and other organic molecules that inevitably accumulated in a time-dependent manner. In other words, titanium surfaces degrade chemically as they age, which compromises their osseointegration capability; this process is defined as the biological aging of titanium. As much as 50% or more of titanium surfaces are covered by carbon within 4-12 weeks after the surface is prepared. Another important phenomenon relevant to the biological aging of titanium is that highly hydrophilic nature of newly prepared titanium surfaces disappears in correlation with the age of titanium and is converted to hydrophobic after a certain time point. This is the reason titanium surfaces we usually see are hydrophobic after unwelcome, sufficient aging.