インプラント経過不良症例に関する臨床的検討

抄録

Currently, dental implants are being widely used in clinics as a method of prosthetic dentistry for missing-teeth. It is certain that further demand for dental implants will be increasingly great from now on. It has often become known to us, however,such cases that implants had to removed resulting from incorrect pre-examinations, complications occurred during and/or after surgeries, and bad progress due to inproper supervision.
We conducted a clinical examination of 52 failing cases of dental implant treatment performed by the Department of Oral and Maxillofacial Surgery,Nihon University School of Dentistry, from 1995 thru 1999. Fifty-two cases consisted of 18 men and 34 women, ranging in age from 41 to 82 years. The average age was 58.6 years. Seven months was the shortest, and 20 years the longest, as spans of time between implanting and removing of those implants,with an average span of 8 years and 10 months.
Details of reasons why 52 men and women had decided to come to the hospital were as follows:5 persons made their own decisions;45 persons were introduced by other dental clinics;1 person was introduced by another department of our school hospital;1 person was introduced by an otorhinological clinic, and no people were introduced to us by dental clinics where implant surgeries had been conducted.