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The aim of this study was to investigate the association between BMI and periodontal infection in a sample of non-smoking individuals aged 75 years or older.
Subjects and Methods
The study sample included 157 non-smoking dentate persons (110 women, 47 men, mean age 80.6 years) belonging to the Geriatric Multidisciplinary Strategy for the Good Care of Older People study in Kuopio, Finland. The data were gathered by interview together with geriatric and oral clinical examination. The outcome variable was the number of teeth with periodontal pockets measuring 4 mm or more in depth. Poisson regression models were used to estimate relative risk (RR) and 95% confidence intervals (CI).
After adjustment for confounding factors, the relative risk for the number of teeth with deepened periodontal pockets (≥4 mm) was 0.7 (CI: 0.6–0.9) among those with a BMI 25–29.99 and 1.1 (CI: 0.8–1.4) among those with a BMI ≥30, compared with those having a BMI <25.
Within the limitations of this study, including small sample size, possibility of confounding and other biases, the results do not provide evidence that elevated body weight would be a risk for periodontal infection among older people.