Retrospective clinical study of Osseotite implants: zero- to 5-year results.
OBJECTIVE
Over the last few years, particular attention has been paid to the implant surface and its influence on the formation and maintenance of surrounding bone. The surface of Osseotite implants (Implant Innovations) is produced by a process of thermal etching, which produces a surface with an average roughness that is twice that of machined implants produced by the same manufacturer. In addition to reducing osseointegration time, this factor appears to favor its maintenance over time. This study presents the results of a clinical trial of Osseotite implants.


METHODS
Five hundred fifty-five Osseotite implants were placed in 244 patients over 5 years, between September 1996 and September 2001. The average follow-up period from implant placement was 26 months (SD 13.1).


RESULTS
After the first surgical stage, 8 failures were noted in 6 patients. Life table analysis showed a cumulative survival rate of 98.5%, but no implant was lost after prosthetic loading, with a 100% survival rate both for the mandible and for the maxilla. For the prosthetic loading time, only the implants with more than 12 months of loading were considered, obtaining an average prosthetic loading time of 34 months (SD 9.2). DISCUS SION: The implant survival rate after loading was 100% both in the anterior and posterior regions, and no difference was noted in relation to the different types of prostheses, or length and width of implants.


CONCLUSIONS
The results obtained in this retrospective study population revealed an acceptable survival rate for these implant-supported restorations.
Garlini
Giuliano
G
Department of Oral Implants and Periodontology, Dental Clinic, University of Milan, Italy. g.garlini@tin.it
Bianchi
Claudio
C
Chierichetti
Valeria
V
Sigurtà
Davide
D
Maiorana
Carlo
C
Santoro
Franco
F
D000328:Adult; D000368:Aged; D015921:Dental Implants; D017267:Dental Prosthesis Design; D019094:Dental Prosthesis, Implant-Supported / Q000145:classification; D019232:Dental Restoration Failure; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015993:Life Tables; D008297:Male; D008334:Mandible / Q000601:surgery; D008437:Maxilla / Q000601:surgery; D008875:Middle Aged; D016348:Osseointegration; D012189:Retrospective Studies; D013499:Surface Properties; D016019:Survival Analysis; D016474:Weight-Bearing
D015921:Dental Implants