Journal of Dental Research, Vol 65, 1071-1077, Copyright © 1986 by International & American Associations for Dental Research Online Journals
A clinical and radiographic assessment of a porous-surfaced, titanium alloy dental implant system in dogs
D. A. Deporter, B. Friedland, P. A. Watson, R. M. Pilliar, T. P. Howley, D. Abdulla, A. H. Melcher and D. C. Smith
A new endosseous dental implant system incorporating a porous-surface
geometry with a tapered, truncated-cone shape was placed bilaterally in
edentulous areas of dog mandibles in a two-stage procedure. All implants
had been stabilized by bone ingrowth by the time of the second procedure
(insertion of a transgingival collar and implant-supported bridge). The
transgingival collar had a porous-surface geometry on its apical one-third,
and was meant to encourage gingival connective tissue ingrowth and
attachment, but in fact provided an excellent milieu for bacterial
contamination. As a consequence, many of the implants showed clinical and
radiographic signs of impending failure by eight months. Only those
implants for which the porous coat, including that of the transgingival
collar, was completely submerged in bone were observed to be successful.
This study reports on the radiographic and clinical assessment of this
implant system in dogs during the period of function.
