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

S. Berland (1) , Olivier Delattre , S. Borzeix , Y. Catonné , E. Lopez (1)

1 BOME - Biologie des organismes marins et écosystèmes

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.

Domaines: Biochimie, Biologie Moléculaire

S. Berland, Olivier Delattre, S. Borzeix, Y. Catonné, E. Lopez. Nacre/bone interface changes in durable nacre endosseous implants in sheep.. Biomaterials, 2005, 26 (15), pp.2767-73. ⟨10.1016/j.biomaterials.2004.07.019⟩. ⟨hal-00131382⟩