Dental Materials Journal
Online ISSN : 1881-1361
Print ISSN : 0287-4547
ISSN-L : 0287-4547
Original Paper
Enhancement of antibacterial property of titanium by two-step micro arc oxidation treatment
Masaya SHIMABUKUROHarumi TSUTSUMIYusuke TSUTSUMITomoyo MANAKAPeng CHENMaki ASHIDAKunio ISHIKAWAHideki KATAYAMATakao HANAWA
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2021 Volume 40 Issue 3 Pages 592-598

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Abstract

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.

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© 2021 The Japanese Society for Dental Materials and Devices
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