Osseointegrated Implant: A Long Term Observation and Clinical Evaluation of 43 Clinical Cases

—As a Pre-research of Total Cases—

Abstract

For more than 30 years since Brånemark and others invented the osseointegrated implant system, its safety as well as high clinical usefulness has been well documented in many reports.
As demonstrated in these reports, the predictability of this system should be evaluated from various perspectives by accumulating a number of cases to follow over a long period, and should be analyzed in a variety of ways.
However, in Japan, there are not as yet many reports in which more than 5 years of follow-up was performed for osseointegrated implant.
At our implant center, 1, 380 osseointegrated implants were placed in 364 cases consisting of 276 patients between the opening of our center and February 1998. The first case treated at our center has been followed up more than 8 years.
In this study, a preliminary survey was conducted to investigate the long-term clinical progress of our early cases which received implants between March 1991 and August 1991 in comparison with the results of our previous preliminary survey conducted in 1995. These preliminary surveys are part of the analysis involving all of our cases to assess clinical usefulness of the osseointegrated implant system.