An evaluation of peri-implant marginal bone loss according to implant type, surgical technique and prosthetic rehabilitation: a retrospective multicentre and cross-sectional cohort study

AbstractTo evaluate implant loss (IL) and marginal bone loss (MBL); follow-up period of up to 10  years after prosthetic loading. Retrospective multi-centre cross-sectional cohort study. Double analysis: (1) all the implants (n = 456) were analysed; (2) to allow for possible cluster error, one implant per patient (n = 143) was selected randomly. Statistical analysis: Spearman’s correlation coefficient; Kruskal–Wallis (post-hoc U-Mann–Whitney); Chi-square (post-hoc Haberman). (1) Analysing all the implants(456): IL was observed in patients with past periodontitis (6 vs. 2.2%,p <  0.05), short implants (12 vs. 2.8%,p <  0.001) and when using regenerative surgery (11.3 vs. 2.9%,p <  0.001); greater MBL was observed among smokers (0.39 ± 0.52 vs. 0.2 ± 0.29,p <  0.01), maxillary implants (0.28 ± 0.37 vs. 0.1 ± 0.17,p <  0.0001), anterior region implants (0.32 ± 0.36 vs. 0.21 ± 0.33,p <  0.001), external connection implants (0.2 ± 0.29 vs. 0.63 ± 0.59,p <  0.0001), and 2–3 years after loading (p <  0.0001). (2) analysing the cluster (143): IL was observed in smokers (18.8 vs. 3.5%,p <  0.05), splinted fixed crowns (12.9%,p <  0.01), short implants (22.2 vs. 4.0%,p <  0.01) and when using regenerative surgery (19.2 vs. 3.4%,p <  0.01); greater MBL was observed in maxillary implants (0.25 ± 0.35 vs. 0.11 ± 0.18,p <  0.05), in ...
Source: Odontology - Category: Dentistry Source Type: research