1. A retrospective multi-center evaluation of osseointegrated implants supporting overdentures;Engquist;Int J Oral Maxillofac Implants,1988
2. Overdentures supported by osseointegrated fixtures for the edentulous mandible: a 2.5 year report;Naert;Int J Oral Maxillofac Implants,1988
3. Prosthetic aspects of osseointegrated fixtures supporting overdentures. A 4-year report;Naert;J Prosthet Dent,1991
4. A multicenter study of overdentures supported by Brånemark implants;Johns;Int J Oral Maxillofac Implants,1992
5. A comparative prospective study of splinted and unsplinted Brånemark implants in mandibular overdenture therapy: a preliminary report;Naert;J Prosthet Dent,1994