Atsuo Okano

Clinical study of patients whose dental implants were removed

Twenty-nine cases including 13 males and 16 females, aged 24 to 71 years (average age of 53.7±11.6), whose dental implants were removed at our deparments for past thirteen years from 1985 to 1998 have been retrospectively discussed. Implants were placed in 26 partial edentulous and 3 totally edentulous, 14 for maxilla, 13 for mandible, 2 for both jaws were removed. These implants included 14 blade, 6 endosseous, 14 subperiosteal, 3 endodontic, and 2 home-made implants. Durations from implant placement to removal were 10 days to 20 years (average of 78.3±83.7 months). Causes of removal were 12 local infections, 4 maxillary sinusitis, 2 nerve disturbances and 1 psycologic problem.