SURFACE CHARACTERIZATION OF TITANIUM IMPLANTS

The initial biocompatability of titanium (Ti) implants is associated w ith surface and not bulk properties; hence surface characterization of these implants is critical for their clinical success. A goal of this study was to characterize the Ti (ASTM F67) samples after conducting three different surface treatments. in this article, the results of x- ray photoelectron spectroscopy, Auger electron spectroscopy, Fourier t ransform infrared spectroscopy, and Raman spectroscopy performed on su rface-modified Ti samples, and also samples immersed in alpha-modifica tion of Eagle's medium and in phosphate buffered saline solution after different surface treatments, are presented. Surface analysis prior t o immersion revealed an amorphous oxide layer on all the samples simil ar in composition to TiO2. No significant difference in oxide thicknes ses was observed. After exposure to the two media an amorphous or fine ly crystalline Ca-P layer was exhibited on all Ti surfaces, having a c hemistry similar to brushite. (C) 1995 American Vacuum Society.