Nacre/bone interface changes in durable nacre endosseous implants in sheep

Biomaterials. 2005 May;26(15):2767-73. doi: 10.1016/j.biomaterials.2004.07.019.


Raw nacre implants persist even after 9 months of implantation into bone tissue in sheep. However the nacre surface undergoes a limited biodegradation process. Smooth-surfaced nacre implants were seen to become microporous after implantation. The results of these long-term, in vivo studies show that the overall process involves bone-resorbing cells, relies on a two-phase mechanism and may correspond to a regulation process. The rate of surface change depends on the bone implantation site and the nacre/bone interaction. The in vivo biodegradability of nacre is a highly variable parameter. The size and shape of the implanted nacre and the cellular environment of the implant are key factors in determining the biodegradation kinetics of the nacre in a living system.

Publication types

  • Evaluation Study

MeSH terms

  • Animals
  • Biocompatible Materials
  • Bone Substitutes*
  • Bone Transplantation / methods*
  • Bone Transplantation / pathology*
  • Bone Transplantation / physiology
  • Female
  • Femur / pathology*
  • Femur / surgery*
  • Implants, Experimental
  • Materials Testing
  • Mollusca / physiology*
  • Mollusca / ultrastructure
  • Osseointegration / physiology
  • Sheep


  • Biocompatible Materials
  • Bone Substitutes