1. A 15-year study of osseointegrated implants in the treatment of the edentulous jaw;Adell;Int J Oral Surg,1981
2. A retrospective multicenter evaluation of osseointegrated implants supporting overdentures;Engquist;Int J Oral Maxillofac Impl,1988
3. Five-year statistical and clinical observations with the IMZ two-stage osteointegrated implant system;Babbush;Int J Oral Maxillofac Impl,1993
4. Peri-implant mucosal aspects of ITI implants supporting overdentures. A five year longitudinal study;Merickse-Stern;Clin Oral Impl Res,1994
5. A 5-year prospective multicenter follow-up report on overdentures supported by osseointegrated implants;Jemt;Int J Oral Maxillofac Impl,1996