Abstract
It has been twenty years since blade vent implants were developed. This type of implants have been widely employed, and the number of clinical data on such implants exceeds that of any other kind of implants. Conducting a survey on the situation concerning implants is meaningful because it provides us with much information which are useful in seeking ways for the betterment of implants.
In May 1988 my colleagues and I sent out a questionair to the members of our study group to obtain data concerning endosseous implants which had existed in the bones of the patients for three years or more. The questionair was returned to us along with panorama X-rays taken before, during and after the insertion of the implants concerned.We were able to get data on 200 cases, involving 363 implants, and we examined these data, focusing especially on the mode that implants are used and both patients and dentists opinions on implants. This essey introduces some interesting points found through the study.
