Hws. Tillmanns et al., EVALUATION OF 3 DIFFERENT DENTAL IMPLANTS IN LIGATURE-INDUCED PERI-IMPLANTITIS IN THE BEAGLE DOG .1. CLINICAL-EVALUATION, The International journal of oral and maxillofacial implants, 12(5), 1997, pp. 611-620
The purpose of this study was to clinically evaluate experimental peri
-implant breakdown. Hydroxyapatite-coated, titanium plasma-sprayed, an
d machined titanium-alloy surfaces were investigated. Eighty-four impl
ants were placed in 14 beagle dogs. Pocket probing depths and clinical
attachment level and mobility measurements were made. Dogs were sacri
ficed at 3 and 6 months. All experimental implants showed a significan
t loss in clinical attachment level (P < .05). Increased pocket probin
g depths for experimental implants occurred during the first 2 months,
after which a plateau was reached. At the 3- and 6-month evaluation,
pocket probing depths at experimental implants were significantly incr
eased (P < .05). No differences among the three implant types were not
ed for clinical attachment levels and pocket probing depths. In genera
l, greater mobility was found with the titanium-alloy implants than wi
th hydroxyapatite-coated and titanium plasma-sprayed implants (P < .02
5). In addition, mobility measurements were significantly greater for
experimental titanium-alloy implants during the first 3 months (P < .0
5). Clinical attachment level measurements were most sensitive to peri
-implant status. All implants were equally susceptible to ligature-ind
uced peri-implant breakdown. Consequently, meticulous oral hygiene and
regular maintenance care are prerequisites for successful implantolog
y.