title: Risk indicators for increased periodontal probing depth in subjects attending a public dental school in Brazil.
abstract: OBJECTIVE
  To assess the prevalence, extent and severity of periodontal probing depth (PD) and their association with sociodemographic and behavioural parameters in subjects attending a public dental school in Brazil.
  
  
  METHODS
  Five hundred and fifty-nine consenting participants (18 to 77 years of age) were submitted to full-mouth periodontal clinical examination and anamnesis questionnaires. The data were analysed by multivariable models using logistic regression analyses. The dependent variables were moderate (≥ 5 mm in ≥ 10% of sites) and deep (≥ 7 mm in at least one site) PD.
  
  
  RESULTS
  The prevalence of individuals with at least one site with PD ≥ 5 mm or ≥ 7 mm was 69% and 54%, respectively. Mean PD ranged from 2.86 to 3.08 mm, and the mean frequency of sites with moderate and deep PD ranged from 10.74% to 14.99%, and from 4.60% to 5.36%, respectively, according to age. Multivariate analyses identified a higher risk for having PD ≥ 5 in ≥ 10% of sites and 7 mm in at least one site in smokers (odds ratio [OR] = 10.56 and 9.10, respectively), and the presence of >10% of sites with bleeding on probing (BOP) (OR = 6.37 to 20.91, and 6.94 to 26.19, respectively). Age 36 to 50 years (OR = 1.95) and >50 years (OR = 3.15), presence of >30% of sites with supragingival biofilm (SB) (OR = 2.80), and ≥ 4 missing teeth (OR = 2.26) were risk indicators for PD ≥ 7 mm in at least one site.
  
  
  CONCLUSIONS
  This particular Brazilian population presented high prevalence and extent of increased periodontal probing depth. Age, smoking, BOP, SB, and tooth loss were risk indicators associated with probing depth in these individuals.
authors: Department of Dental Clinics, Federal University of Rio de Janeiro, Brazil. carinabogho@hotmail.com
authors: Carina M
authors: CM
authors: Silva-Boghossian
authors: Ronir
authors: R
authors: Luiz
authors: Ana Paula
authors: AP
authors: Colombo
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D018441:Biofilms; D001938:Brazil / Q000453:epidemiology; D003773:Dental Plaque / Q000453:epidemiology; D004522:Educational Status; D005006:Ethnicity / Q000706:statistics & numerical data; D005260:Female; D005884:Gingival Hemorrhage / Q000453:epidemiology; D006801:Humans; D007182:Income; D008297:Male; D008875:Middle Aged; D017622:Periodontal Attachment Loss / Q000453:epidemiology; D010510:Periodontal Diseases / Q000145:classification / Q000453:epidemiology*; D010512:Periodontal Index; D015995:Prevalence; D012307:Risk Factors; D012907:Smoking / Q000453:epidemiology; D016388:Tooth Loss / Q000453:epidemiology; D055815:Young Adult