Endosseous dental implants had been inserted on 59 partially edentulous patients in Yougdong Severance Hospital from march, 1990 to December, 1993, and their clinical & radiographic status were evaluated. The results are as follows;
1. Overall success rate for 152 implants after a follow-up period ranging from 11 months to 55 months was 86.2% (81.3% for maxillary implants and 89.8% for mandibular implants).
2. Fixture survival rate and prosthesis survival rate, 6 months to 37 months after the fixtation of prosthesis, were 99.2% and 98.6%, respectively.
3. Among the failed implants, 12(57.1%) were below 10mm in lengths, and all but one fixture failed before prosthetic connections.
4. Peri-implant marginal bone losses, 12 months after abutment connections, were 1,536mm for maxilla and 1,470mm for mandibles.
5. The most frequent complication was loosening of fixation screws, all of them from prosthesis supported by lor 2 implant fixtures.
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