抄録
Thirty years have passed since the Osseointegrated Implant System was developed, and it has been used mainly for rehabilitation of stomatographic function. In Japan, the clinical application of the system has been gradually popularized.
Thus this report was made to describe the use of this system in a prospective study of 65 patients,between 25 and 85 years of age, from 1989 to 1994,and total of 262 fixtures were implanted.
During the observation period, from fixtures insertion to abutment connection, non acquired Osseointegration 14 fixtures were checked, and 4 of these fixtures were removed due to loss of their osseointegration after superstructures were fitted. The implant survival rate was 94.4%at abutment connection operation, and after superstructures were fitted, the implant survival rate was 97.5%. For 5 years, the cumulative survival rate of implants was 92.1%.
