Figure 2.

Age-dependent changes in hydrophilicity of micropit and micro-nano-hybrid titanium surfaces after UV treatment. Fresh (immediately after UV treatment) and aged (3 and 7 days after UV treatment) UV-treated titanium surfaces as well as UV-untreated titanium surfaces are compared. Upper panels show the top and side views of titanium discs immediately after a 10 μL droplet of distilled H₂O was placed. Lower panels show the calculated area of spread and the contact angle of H₂O.

Note: Data are mean ± SD (n = 3).