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Fabrication of Mechanically Tunable and Bioactive Metal Scaffolds for Biomedical Applications
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Published on: December 8, 2015

Mesoporous titanium dioxide coating for metallic implants.

Wei Xia1, Kathryn Grandfield, Andreas Hoess

  • 1Applied Materials Science, Department of Engineering Sciences, Uppsala University, Uppsala, Sweden. wei.xia@angstrom.uu.se

Journal of Biomedical Materials Research. Part B, Applied Biomaterials
|September 29, 2011
PubMed
Summary
This summary is machine-generated.

This study developed a bioactive mesoporous titanium dioxide coating for implants. This novel coating enhances bone bonding, delivers drugs effectively, and shows no cytotoxicity, offering improved implant performance.

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Area of Science:

  • Biomaterials Science
  • Nanotechnology
  • Implantology

Background:

  • Developing multifunctional implant coatings is crucial for enhancing osseointegration and preventing infections.
  • Current coatings often lack the necessary surface area for effective drug delivery and bioactivity.

Purpose of the Study:

  • To investigate a bioactive mesoporous titanium dioxide (MT) coating for surface drug delivery.
  • To assess its potential as a multifunctional implant coating for bone bonding and biological stability.

Main Methods:

  • Fabrication of MT coating using evaporation induced self-assembly (EISA).
  • Characterization of surface area (BET) and pore diameter.
  • Adhesion tests (scratch, in situ screw-in/screw-out).
  • In vitro hydroxyapatite (HA) formation assessment.
  • Antibiotic uptake and sustained release studies (Cephalothin).
  • In vitro antibacterial efficacy against E.coli.
  • Cytotoxicity testing on MG-63 osteoblastic cells.

Main Results:

  • MT coating exhibited high BET surface area (172 m²/g) and average pore diameter (4.3 nm).
  • Strong adhesion to metallic substrate confirmed.
  • Enhanced bioactivity and rapid HA formation compared to dense TiO₂.
  • Significant antibiotic uptake (13.4 mg/cm³) with sustained release.
  • Effective antibacterial activity against E.coli and no observed cytotoxicity.

Conclusions:

  • The developed MT coating is bioactive, biocompatible, and promotes rapid bone-like apatite formation.
  • It serves as an effective platform for surface drug delivery, offering sustained release and antibacterial properties.
  • This mesoporous coating represents a promising advancement for multifunctional implant applications.