Submerged alumina dental root implants in humans: five-year evaluation.
This article describes the placement, success rate, and evaluation of an experimental alumina (Al2O3) ceramic dental implant at a mean placement time of 5 years. The study compared the longevity of a submerged implant of the same root design and a refined surgical technique with previously reported studies of the implant exposed to the human oral environment during initial healing. A 54% success rate was achieved for 29 implants placed in the maxillae and mandible, all restored with cast gold dental crowns. A significant difference (p = 0.05) appeared between success and failures at 7.8 months following placement. Crown/root ratio slopes were an earlier and more sensitive indicator of potential success or failure than the bone height slopes. Computer analysis revealed no apparent correlation between implant mobility and/or pocket depths and implant longevity. Delayed implant root fractures and a cast post fracture occurred in 20% of the implants that survived.
Brose
M O
MO
Ohio State University, College of Dentistry, Columbus.
Avers
R J
RJ
Rieger
M R
MR
Duckworth
J E
JE
D000535:Aluminum; D000537:Aluminum Oxide; D000539:Alveolar Process / Q000000981:diagnostic imaging; D003758:Dental Implantation, Endosseous / Q000295:instrumentation* / Q000379:methods; D003779:Denture Design; D004868:Equipment Failure; D005069:Evaluation Studies as Topic; D006801:Humans; D008137:Longitudinal Studies; D008334:Mandible / Q000000981:diagnostic imaging / Q000601:surgery; D011176:Post and Core Technique; D011859:Radiography; D013499:Surface Properties; D014092:Tooth Root
D000535:Aluminum; D000537:Aluminum Oxide