The development of Ti alloys for dental implant with high corrosion resistance and mechanical strength
Junichi Yamazoe, Masaharu Nakagawa, Yoshinari Matono, Akari Takeuchi, Kunio Ishikawa (2007) The development of Ti alloys for dental implant with high corrosion resistance and mechanical strength Dent Mater J (IF: 1.9) 26(2) 260-7Abstract
The corrosion behaviors of Ti and Ti-6Al-4V, Ti-6Al-7Nb, Ti-0.5Pt, Ti-6Al-4V-0.5Pt, and Ti-6Al-7Nb-0.5Pt alloys were examined using an electrochemical analyzer in artificial saliva containing 0.1 and 0.2% NaF at a pH of 4.0. The SEM observations revealed that the surfaces of the alloys containing 0.5 wt% Pt were not affected in fluoride-containing environments, whereas the surfaces of Ti, Ti-6A1-4V, and Ti-6Al-7Nb alloys were markedly rough. In artificial saliva containing 0.1% NaF at a pH of 4.0, the amounts of Ti dissolved from the Ti, Ti-6Al-4V, and Ti-6Al-7Nb alloys were about 50 times larger than those of the alloys containing 0.5 wt% Pt. The tensile strengths of the alloys containing 0.5 wt% Pt were equal to or higher than those of pure Ti or the alloys without Pt. The Ti-0.5Pt, Ti-6Al-4V-0.5Pt, and Ti-6Al-7Nb-0.5 alloys are expected to be useful in clinical dentistry as new Ti alloys with high corrosion resistance and mechanical strength.
Links
http://www.ncbi.nlm.nih.gov/pubmed/17621943http://dx.doi.org/10.4012/dmj.26.260
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