Prevalence and Risk Indicators of Peri‐Implant Diseases and Buccal Soft‐Tissue Dehiscence: A Cross‐Sectional Study From a University‐Based Cohort
Abstract
ABSTRACT Aim To assess the prevalence of peri‐implant diseases and buccal peri‐implant soft‐tissue dehiscence (PISTD) and to identify the associated risk indicators. Methods Patients previously rehabilitated with implant‐supported rehabilitations at the University of Turin Dental School were specifically recalled with a registry‐based approach for this cross‐sectional study. Data collection included medical and dental history, full‐mouth clinical examination, and periapical radiographs. Moderate/severe peri‐implantitis was diagnosed based on bone loss (direct criterion, when available) or bone level (indirect criterion) ≥ 2 mm and the presence of bleeding/suppuration. PISTD was defined as mucosal dehiscence on the buccal aspect of at least one implant site. Multilevel, multivariable logistic regression models were applied to identify factors associated with moderate/severe peri‐implantitis and buccal PISTD. Results Of the 397 patients contacted, 146 were included (mean age 61.1 ± 14.5 years; current smokers 34.3%; stage III‐IV periodontitis 65.1%) with a total of 511 dental implants (mean function time: 13.3 years [2–31]). Implant survival rate was 96.5%. Moderate/severe peri‐implantitis was detected in 56.8% of patients and 34.7% of implants. Prevalence of buccal PISTD was 54.1% and 40.5%, respectively. Protective indicators for moderate/severe peri‐implantitis included supportive peri‐implant care > twice a year (OR = 0.16; 95% CI: 0.03–0.95), > 2 mm of keratinized tissue…
How strong is the evidence?
Evidence Hub reads this as a cohort study, done in people. Its evidence level is 3 of 5 (Moderate · trial / cohort / secondary analysis). Trials without a large randomized design, cohorts and secondary analyses give moderate evidence. Reported size: 397 participants or records.
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