A bioactive titanium foam scaffold for bone repair

Acta Biomater. 2005 Sep;1(5):523-33. doi: 10.1016/j.actbio.2005.04.005. Epub 2005 Jul 14.

Abstract

While titanium has been clinically successful as an orthopedic or dental implant material, performance problems still persist related to implant-bone interfacial strength and mechanical modulus mismatch between titanium and tissue. We describe here the preparation of a titanium foam as a better mechanical match to tissue with surfaces attractive to bone cells through deposition of an organically-modified apatite layer (organoapatite). In a rotating bioreactor, these organoapatite-coated foams are successfully colonized by preosteoblastic cells. Finite element analyses suggest that ingrown tissue in these systems may improve both implant performance and tissue formation through load-sharing and stress distribution. The novel metal-ceramic-polymer hybrid materials described here hold great promise for bone tissue engineering.

Publication types

  • Evaluation Study
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • 3T3 Cells
  • Animals
  • Bone Regeneration / physiology
  • Bone Substitutes / chemistry*
  • Cell Culture Techniques / methods
  • Cell Proliferation
  • Computer Simulation
  • Finite Element Analysis
  • Materials Testing
  • Mice
  • Models, Biological*
  • Osseointegration / physiology*
  • Osteoblasts / cytology*
  • Osteoblasts / physiology*
  • Tissue Engineering / methods*
  • Titanium / chemistry*

Substances

  • Bone Substitutes
  • Titanium