Peri‐implant bleeding on probing: a cross‐sectional multilevel analysis of associated factors

Abstract Objectives The objective was to evaluate the association between peri‐implant bleeding on probing (BoP) and probing depth. Other factors regarding patients, implants, and sites were taken into consideration. Material and methods Consecutive adult patients with ≥1 dental implant were eligible. Two calibrated operators examined the patients. BoP was the outcome variable. The effects of patient, implant and site factors on BoP were assessed using a 3‐level logistic model. Results Fifty‐two patients for a total of 92 implants and 552 sites were included in the analysis. The BoP was observed in 217 sites (39%). The odds ratio increased by 1.81 (95% CI from 1.47 to 2.23; P < 0.0001) for each 1 mm increment in probing pocket depth. A significant higher risk was observed also for interproximal vs. approximal surfaces ( OR = 1.55; 95% CI from 1.02 to 2.36; P = 0.0402). Conclusions Peri‐implant bleeding was associated with site‐specific factors.