Journal of implantology and applied sciences ISSN:2765-7833(Print) 2765-7841(Online) 대한구강악안면임플란트학회지

We evaluated various applications and clinical outcomes of Osstem® implants installed by an oral and maxillofacial surgeon from January 2000 to December 2005 retrospectively. 1. Total 534 fixtures of Osstem^® implant system were installed to 133 patients. 2. The patients ranged from 20 to 95 years in age (mean 51.5). There were 72 male and 61 female patients. 3. From the 534 fixtures, 305 fixtures were installed in mandible and 229 fixtures in maxilla. 4. The major operating method was guided bone regeneration with implant fixture installation (66 patients), followed by osteotome technique (32), simple technique without supplementary procedure (28), and others. 5. From the 534 fixtures in 133 patients, early failure of implant was found in 13 fixtures (2.4%) from 10 patients (7.5%). From the 318 fixtures in 98 patients who have functioned for more than 1 year after prosthesis delivery, there were two failures and 95.8% 6-year cumulative survival rate. One case failed after 2.5 years, and the other case after 4 years. 6. Major causes of early failure were detected as lack of initial stability (4 patients). From the results of our mid-term and short-term follow-up study, Osstem^® implant system showed good clinical outcomes and high success rate. Furthermore, in spite of extensive surgical procedure, excellent final clinical results were obtained.