title: Effect of obesity on periodontal attachment loss progression: a 5-year population-based prospective study.
abstract: The aim of this study was to assess the effect of overweight and obesity on periodontal attachment loss (PAL) progression in an urban population from south Brazil.
  
  
  
  In 2001, a population-based oral health survey entitled "Epidemiology of periodontal diseases: the Porto Alegre Study" was conducted by drawing a probabilistic sample of 1586 individuals. After 5 years, 755 (participation rate: 47.6%) individuals were re-examined. For this analysis, self-reported diabetics, underweight individuals, and individuals with <6 teeth were excluded. Poisson regressions were used to calculate relative risks (RR) and 95% confidence intervals (CI) adjusted for sex, age, skin colour, education, socio-economic status, smoking and dental care.
  
  
  
  Five hundred and eighty-two individuals (333 males/249 females, 36.02 ± 14.97 years) were included. Overall, obese individuals had significantly higher risk of experiencing PAL progression than individuals with normal weight after adjusting for important co-factors (RR = 1.36, 95% CI = 1.04-1.78). In a stratified analysis, no statistically significant associations were observed between PAL progression and obesity for males (RR = 1.13, 95% CI = 0.75-1.69), whereas obese females were at statistically significant higher risk than normal weight females (RR = 1.64, 95% CI = 1.11-2.43).
  
  
  
  Obesity appears to be a risk factor for PAL progression for females but not males in this developing country population.
authors.affiliation: Faculty of Dentistry - Periodontology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
authors.forename: Eduardo José
authors.initials: EJ
authors.lastname: Gaio
authors.affiliation: Faculty of Dentistry - Periodontology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
authors.forename: Alex Nogueira
authors.identifier: 0000-0003-0531-6234
authors.initials: AN
authors.lastname: Haas
authors.affiliation: Faculty of Dentistry - Periodontology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
authors.forename: Cassiano Kuchenbecker
authors.initials: CK
authors.lastname: Rösing
authors.affiliation: Faculty of Dentistry - Periodontology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
authors.forename: Rui Vicente
authors.initials: RV
authors.lastname: Oppermann
authors.affiliation: Department of Periodontology, Temple University School of Dentistry, Philadelphia, PA, USA.
authors.forename: Jasim M
authors.identifier: 0000-0001-7801-3811
authors.initials: JM
authors.lastname: Albandar
authors.affiliation: Departments of Periodontics and Oral Biology, The Dental College of Georgia, Augusta University, Augusta, GA, USA.
authors.forename: Cristiano
authors.initials: C
authors.lastname: Susin
mesh_terms: D000328:Adult; D001938:Brazil; D005260:Female; D006801:Humans; D008297:Male; D009765:Obesity; D017622:Periodontal Attachment Loss; D011446:Prospective Studies
keywords: epidemiology; longitudinal studies; obesity; periodontitis