Relationship Between Decayed Teeth and Metabolic Syndrome: Data From 4716 Middle-Aged Male Japanese Employees

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    • Ojima Miki
    • Department of Preventive Dentistry, Osaka University Graduate School of Dentistry
    • Amano Atsuo
    • Department of Preventive Dentistry, Osaka University Graduate School of Dentistry
    • Kurata Shu
    • Dental Clinic, Osaka Health Support Center, Sumitomo Mitsui Banking Corporation


<b>Background: </b>Epidemiological findings regarding the relationship between decayed teeth (DT) and metabolic syndrome (MetS) are scarce. We evaluated the relationship of DT with MetS, obesity, and MetS components in early middle-aged male Japanese employees.<BR><b>Methods: </b>We cross-sectionally analyzed dental and medical health checkup results from a total of 4716 participants aged 42 or 46 years. Logistic regression models were employed to calculate the odds ratios (ORs) and 95% confidence intervals (CIs) after adjustment for age, breakfast consumption frequency, drinking habits, smoking status, and physical activity.<BR><b>Results: </b>Significant differences in the prevalence of MetS, obesity determined by body mass index, and the components of MetS between participating men with and without DT were detected (all <i>P</i> < 0.01). The adjusted OR of MetS was 1.41 (95% CI, 1.14–1.74) for those with 1 or 2 DT, and 1.66 (95% CI, 1.28–2.16) for those with ≥3 DT (<i>P</i> for trend = 0.01), and this significant relationship was observed even in those without periodontal pocket formation (<i>P</i> for trend = 0.03) or missing teeth (<i>P</i> for trend = 0.02). DT was significantly related to overweight/obesity and the MetS components of hypertension, dyslipidemia, and hyperglycemia, with adjusted ORs of 1.35 (95% CI, 1.19–1.53), 1.22 (95% CI, 1.07–1.39), 1.18 (95% CI, 1.03–1.34), and 1.33 (95% CI, 1.13–1.56), respectively. In addition, even in non-overweight/non-obese men, DT was found to be related to dyslipidemia and hyperglycemia, though with marginal significance (<i>P</i> < 0.05).<BR><b>Conclusions: </b>Our findings suggest that having DT is related to MetS in early middle-aged Japanese men directly and through obesity and is independent of health behaviors, periodontal condition, and tooth loss.


  • Journal of Epidemiology

    Journal of Epidemiology 25(3), 204-211, 2015

    Japan Epidemiological Association


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