1. The long-term efficacy of currently used dental implants: a review and proposed criteria of success;Albrektsson;Int J Oral Maxillofac Implants,1986
2. Osseointegration and its experimental background;Brånemark;J Prosthet Dent,1983
3. Failures and complications in 391 consecutively inserted fixed prostheses supported by Braenemark implant in the edentulous jaw: a study of treatment from the time of prostheses placement to the first annual check up;Jemt;Int J Oral Maxillofac Implants,1991
4. Tube angulation effect on radiographic analysis of the implant-abutment interface;Ormaechea;Int J Oral Maxillofac Implants,1999
5. Radiographical evaluation of the gap at the implant-abutment interface;Papavassiliou;J Esthet Restor Dent,2010