Journal of Dental Research, Vol 61, 1006-1009, Copyright © 1982 by International & American Associations for Dental Research Online Journals
A model for the implant-bone interface characteristics of porous dental implants
S. D. Cook, J. J. Klawitter and A. M. Weinstein
The use of computer-aided design techniques, such as finite element stress
analysis, to evaluate implant designs requires that the mechanics at the
interface between the implant and the bone be characterized. This problem
is accentuated when implants designed to achieve stabilization by tissue
growth into porous coatings are used. A model has been developed to
represent the mechanical properties of the porous material-bone interface.
The model, which accounts for the mechanics of bone tissue grown into a
porous implant surface, was also developed so that it could be incorporated
into a three-dimensional finite-element analysis. The analytical results
from a three-dimensional finite-element model of a cylindrical porous
rooted dental implant system incorporating the interface model were
compared to the results of mechanical tests performed on similar implants
which had resided in canines for two yr. The results from the finite
element analysis using the interface model were found to be in better
agreement with the experimental results than when a direct
bone-to-porous-material interface was assumed.
