Abstract:
In this study, the effect of anodized titanium surfaces on osteoblast-like cells behavior was investigated. Grade 2 commercially pure titanium specimens with 20x10x1 mm in size was anodized in two electrolytes with different compositions: 1) 0.2 M H3PO4 and 2) 0.03 M Ca-GP and 0.15 M CA. In the electrolyte 1, 200v, 300v, and 350v anodized voltages were used; 140v, 200v, 260v, and 300v were adopted in the electrolyte 2. Because of the different anodizing conditions, various oxide layers with different surface properties and chemical compositions were formed. To evaluate biocompatibility of these anodized titanium surfaces, cell culture of osteoblast-like cell line (Saos-2) was carried out. In current study, cytotoxicity test, cell attachment and spreading, cell morphology, cell proliferation and differentiation were estimated. The result of cytotoxicity test showed that anodic oxidation on titanium was not toxic. Cell attachment was enhanced on anodized titanium surfaces after 1 or 2 h cell culture. Marked morphologic difference of osteoblasts on anodized titanium surfaces was observed when compared with that on cp Ti. After 4 days cell culture, higher cell proliferation was shown on most of the anodized surfaces. In summary, the anodic oxidation technique investigated in present study had an effect on early osteoblast behaviour and may improve biocompatibility of titanium.