Int J Periodontics Restorative Dent. 2023 Jun 20. doi: 10.11607/prd.6013. Online ahead of print.
ABSTRACT
The aim of this retrospective study is to evaluate the performance of implants placed with the All-on-4 technique after a mean time in function of 9 years. Thirty-four patients treated with 156 implants were selected for this study. Eighteen patients underwent teeth extraction on the day of implant placement (group D); 16 were already edentulous (group E). A peri-apical radiograph was taken after a mean of 9 years (range: 5 to 14 years). Success, survival rate, and prevalence of peri-implantitis were calculated. Statistical analysis was used to assess comparisons between groups. After a mean follow-up time of 9 years, the cumulative survival rate was 97.4%, and the success rate was 77.4%. The difference between initial and final radiographs resulted in a mean marginal bone loss (MBL) of 1.3 ± 1.06 mm (range: 0.1 to 5.3 mm). No differences were shown between group D and group E. Fifteen (9.6%) implants in 9 (26.5%) patients were affected by peri-implantitis. This study shows that the All-on-4 technique is a reliable treatment for both edentulous patients and patients that need to undergo dental extractions, with a long follow up. MBL found in this study is similar to MBL around implants used in other rehabilitation types.
PMID:37338922 | DOI:10.11607/prd.6013
