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

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)

Abstract

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-6Al-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.

Original languageEnglish
Pages (from-to)260-267
Number of pages8
Journaldental materials journal
Volume26
Issue number2
DOIs
Publication statusPublished - Mar 2007

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Dentistry(all)

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