Premium
The bleeding site: a multi‐level analysis of associated factors
Author(s) -
Farina Roberto,
Tomasi Cristiano,
Trombelli Leonardo
Publication year - 2013
Publication title -
journal of clinical periodontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.456
H-Index - 151
eISSN - 1600-051X
pISSN - 0303-6979
DOI - 10.1111/jcpe.12118
Subject(s) - medicine , bleeding on probing , odds ratio , dentistry , logistic regression , bleed , gingival and periodontal pocket , periodontitis , surgery
Aim To evaluate the association between the probability of a sulcus/pocket to bleed on probing (BoP) and patient related as well as site‐specific characteristics. Methods Data from 88960 sites were retrospectively derived from the clinical record charts of 601 adult patients. BoP (positive/negative) had been recorded at the initial periodontal visit after probing pocket depth ( PPD ) assessment. To analyse the influence of patient‐, tooth‐ and site‐related factors on the probability for a site to be BoP+, a logistic, 3‐level model was built with BoP as the binary outcome variable. Results (i) The mean probability to be BoP+ for a site with PPD = 3 mm was 18%, and the log odds increased by 0.69 for each 1 mm increment in PPD ; (ii) a significantly higher risk for BoP+ was observed for inter‐proximal versus approximal surfaces, posterior teeth versus anterior teeth, females versus males, while a significantly lower risk was observed for smokers versus non‐smokers; (iii) when controlling for the significant covariates, different BoP+ probabilities could still be observed among sites in patients with a different susceptibility to BoP. Conclusions The probability of a site to be BoP+ was associated with either site‐specific (i.e. PPD , tooth aspect, tooth type) or patient‐related factors (i.e. gender, smoking status).