Amaç: Bu retrospektif çalışmanın amacı özel kliniğe başvuran tam veya kısmi

Objective: The aim of this retrospective study was to assess the marginalbone levels around platform-switched dental implants placed subcrestallyin partially or totally edentulous patients who had been treated in a privatepractice.Methods: A total of 200 implants placed in 64 patients, with a mean follow-up time of 5.3±1.7 years, were included in the study. Implants wereplaced 0.5 mm subcrestally via one- or two-stage surgical approach. Dataregarding the distribution and diameter of the implants, the type of theprosthetic restoration, and marginal bone levels were assessed by one calibratedexaminer.Results: Overall, the mean marginal bone loss was found to be 0.82±1.6mm, and 66% of the implants (n=81) showed no bone loss, whereas 28%(n=35) showed bone loss >1mm, and 20% (n=25) showed bone loss >2mm.Out of 18 implants in use for 1–3 years, 14 of them showed no bone loss.Among implants that were in function for 3–5 years, 25% (n=15) showedbone loss >1mm, and 12% (n=7) showed bone loss >2mm. In this study, themajority of the implants were in use for more than 5 years (n=122). Out ofthem, 66% (n=81) showed no bone loss, whereas 28% (n=35) showed boneloss >1 mm, and 20% (n=25) showed bone loss >2mm.Conclusion: Within the limits of this retrospective study, one can saythat slight amount of marginal bone loss is observed around the platform-switched implants placed subcrestally in a long-term follow-up. However,further studies are needed to confirm this finding.