Clinical and radiographic outcomes of implants placed inZ extraction sites treated with alveolar ridge preservation: a 10-year retrospective analysis of a case series

Objectives: The aim of the present study was to evaluate clinical and radiographic outcomes of implants placed in alveolar sockets treated by means of alveolar ridge preservation after 10 years of follow-up. Method and materials: Eleven patients treated with 11 implants placed after alveolar ridge preservation using bovine-derived xenograft particles and collagen membrane were selected. Full-mouth plaque score, full-mouth bleeding score, probing depth at four sites per implant, and radiographic marginal bone level at mesial and distal aspects for each implant were recorded at baseline and after 10 years of follow-up. The primary outcome was the radiographic marginal bone loss. The marginal bone loss was considered as the difference between marginal bone level at baseline and after lo years of observation time. Results: After lo years of follow-up, full -mouth plaque score increased significantly (P< .05), while no statistically significant differences were found in the change in full -mouth bleeding score (P <= .05). At the 10 -year observation period, a significant increase in probing depth was observed at all sites (P<.05), except at the mesial aspects (P <=.05). Radiographic marginal bone loss was 1.1 +/- 0.1 mm and 1.0 +/- 0.1 mm at mesial and distal sites, respectively. Conclusion: Whit in the limitations of the present study, implants placed in post -extraction sockets treated with alveolar ridge preservation yielded stable clinical and radiographic results after lo years of follow-up.