The document summarizes findings from 10 randomized controlled trials comparing different dental implant systems. The trials evaluated outcomes like failure rates, marginal bone loss, and peri-implant soft tissue health. Meta-analyses found no significant differences between systems in failures or bone loss over time, including between surface types. Subsequent follow-ups of initial trials continued finding no significant differences in long-term outcomes between major implant systems.

1. Longitudinal Studies of Various Dental Implant Systems Dental Implant Fellowship Program (DIFP) Fellow’s Topic Presentation

6. Scientific Literature 2. Boerrigter et al Oral RehabiI1997 Controlled clinical trial (60 patients), comparing the effect of mandibular overdentures on two different implant systems “Brånemark system and the IMZ-system” in edentulous patients were compared one year after insertion of the new dentures. Evaluation included peri-implant and radiographical parameters . During the osseointegration period, five Brånemark and one IMZ-implants were lost. The results were less favorable for the Brånemark group than for the IMZ-group; however, these differences were not significant .

22. Scientific Literature . 2. Engquist et al . Clin Oral Implants Res 2002 Follow up for Astrand et al 1999 which demonstrated high survival rates and small marginal bone changes for Astra Tech when compared with Brånemark System implants. Result : There was no significant marginal bone change between baseline and the 1-year examination or between the 1- and 3-year examinations. The survival rate of Astra Tech implants was significantly higher (98.9%) than for Brånemark System implants

23. Scientific Literature 3. Astrand et al Clin Oral Implants Res 2004 Follow up for Astrand et al 1999 which demonstrated high survival rates and small marginal bone changes for Astra Tech when compared with Brånemark System implants. Result : Between baseline and the 5-year examination, the marginal bone level changes were small, with no difference between the implant systems. At the 5-year examination, the survival rate for Astra Tech implants was 98.4% and for the Brånemark implants it was 94.6%. The difference was not statistically significant.