Characteristics of multi-layer coating formed on commercially pure titanium for biomedical applications

Mater Sci Eng C Mater Biol Appl. 2015 Mar:48:579-85. doi: 10.1016/j.msec.2014.12.058. Epub 2014 Dec 18.

Abstract

An innovative multi-layer coating comprising a bioactive compound layer (consisting of hydroxyapatite and calcium titanate) with an underlying titanium oxide layer (in the form of anatase and rutile) has been developed on Grade 4 quality commercially pure titanium via a single step micro-arc oxidation process. Deposition of a multi-layer coating on titanium enhanced the bioactivity, while providing antibacterial characteristics as compared its untreated state. Furthermore, introduction of silver (4.6wt.%) into the multi-layer coating during micro-arc oxidation process imposed superior antibacterial efficiency without sacrificing the bioactivity.

Keywords: Antibacterial surface; Biocompatibility; Commercially pure titanium; Hydroxyapatite; Micro-arc oxidation; Titanium oxide layer.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Bacterial Agents* / chemical synthesis
  • Anti-Bacterial Agents* / chemistry
  • Anti-Bacterial Agents* / pharmacology
  • Coated Materials, Biocompatible* / chemical synthesis
  • Coated Materials, Biocompatible* / chemistry
  • Coated Materials, Biocompatible* / pharmacology
  • Escherichia coli / growth & development*
  • Oxidation-Reduction
  • Staphylococcus aureus / growth & development*
  • Titanium / chemistry*

Substances

  • Anti-Bacterial Agents
  • Coated Materials, Biocompatible
  • Titanium