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Updated: Mar 24, 2026

Robust Ligature-Induced Model of Murine Periodontitis for the Evaluation of Oral Neutrophils
Published on: January 21, 2020
Effect of obesity on periodontal attachment loss progression: a 5-year population-based prospective study
Eduardo José Gaio1, Alex Nogueira Haas1, Cassiano Kuchenbecker Rösing1
1Faculty of Dentistry - Periodontology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
Aim:
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.
Methods:
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.
Results:
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).
Conclusion:
Obesity appears to be a risk factor for PAL progression for females but not males in this developing country population.
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