Porous-surfaced implants in maxillary partial edentualism: Clinical trial results.
Deporter, D.A., Todescan, R., Watson, P., Phoroah, M., and Riley N.
European Association for Osseointegration. Clin Oral Implants Research August 2000:11(4):387
50 patients received 151 Endopore® implants (mean length, 8.7mm) in the maxilla (76.8% posteriorly). 55.6% of implant crowns were splinted, while the remainder were not. Records were collected at baseline (one month after prosthesis), 6 mos, 1 & 2 yrs. To date, implant survival is 97.4% (four implants lost). Radiographs showed stable crestal bone levels with time, and no correlation between crestal bone level and whether implants were located anteriorly or posteriorly. Neither were there effects of implant length or diameter or splinting on bone levels. There was a significant positive correlation between PTV’s** and time, but not with implant length. There was a highly significant correlation between implant diameter and mean PTV (increasing diameter = improved PTV). PTV values were better for implants located in the posterior than anterior maxilla. As well, mean PTV’s at all times were better for non-splinted implants. It is concluded that implants with a sintered porous surface geometry perform extremely well, even in short lengths in the maxilla. Crestal bone levels remain stable under function, and Periotest™ measurements of subclinical mobility indicate superior implant stability in the posterior vs. anterior maxilla and in non-splinted vs. splinted prostheses. Partial Funding provided be Innova Corporation, Toronto, Canada.
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