Enhancement of antibacterial property of titanium by two-step micro arc oxidation treatment

Masaya Shimabukuro, Harumi Tsutsumi, Yusuke Tsutsumi, Tomoyo Manaka, Peng Chen, Maki Ashida, Kunio Ishikawa, Hideki Katayama, Takao Hanawa

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


A customized micro arc oxidation (MAO) treatment technique was developed to obtain desirable antibacterial properties on titanium surfaces. The two-step MAO treatment was applied to fabricate a specimen containing both Ag and Zn in its surface oxide layer. Surface analyses and metal-ion release tests were performed to evaluate the presence of Ag and Zn and the ion release behavior for simulating practical usage, respectively. Additionally, the antibacterial properties of the specimens were also evaluated using gram-negative facultative anaerobic bacteria. The MAO-treated specimens containing both Ag and Zn showed excellent antibacterial properties against Escherichia coli, and the properties were sustained even after 28 days of immersion in physiological saline to simulate the living environment.

Original languageEnglish
Article numberdmj/2020-188
Pages (from-to)592-598
Number of pages7
Journaldental materials journal
Issue number3
Publication statusPublished - 2021

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Dentistry(all)


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