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Coatings 2017, 7(3), 45;

Review of Antibacterial Activity of Titanium-Based Implants’ Surfaces Fabricated by Micro-Arc Oxidation

College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Author to whom correspondence should be addressed.
Academic Editor: Yuelian Liu
Received: 28 November 2016 / Revised: 8 March 2017 / Accepted: 14 March 2017 / Published: 22 March 2017
(This article belongs to the Special Issue Advanced Biomimetic Calcium Phosphate Coatings)
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Ti and its alloys are the most commonly-used materials for biomedical applications. However, bacterial infection after implant placement is still one of the significant rising complications. Therefore, the application of the antimicrobial agents into implant surfaces to prevent implant-associated infection has attracted much attention. Scientific papers have shown that inorganic antibacterial metal elements (e.g., Ag, Cu, Zn) can be introduced into implant surfaces with the addition of metal nanoparticles or metallic compounds into an electrolyte via micro-arc oxidation (MAO) technology. In this review, the effects of the composition and concentration of electrolyte and process parameters (e.g., voltage, current density, oxidation time) on the morphological characteristics (e.g., surface morphology, bonding strength), antibacterial ability and biocompatibility of MAO antimicrobial coatings are discussed in detail. Anti-infection and osseointegration can be simultaneously accomplished with the selection of the proper antibacterial elements and operating parameters. Besides, MAO assisted by magnetron sputtering (MS) to endow Ti-based implant materials with superior antibacterial ability and biocompatibility is also discussed. Finally, the development trend of MAO technology in the future is forecasted. View Full-Text
Keywords: micro-arc oxidation; antibacterial ability; Ag; Cu; Zn micro-arc oxidation; antibacterial ability; Ag; Cu; Zn

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He, X.; Zhang, X.; Wang, X.; Qin, L. Review of Antibacterial Activity of Titanium-Based Implants’ Surfaces Fabricated by Micro-Arc Oxidation. Coatings 2017, 7, 45.

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