Stimulated salivary flow rate and oral health status

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Author(s)

    • Shimazaki Yoshihiro
    • Section of Preventive and Public Health Dentistry, Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University|Department of Preventive Dentistry and Dental Public Health, School of Dentistry, Aichi Gakuin University
    • Fu Bohan
    • Section of Preventive and Public Health Dentistry, Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University
    • Yonemoto Koji
    • Department of Environmental Medicine, Graduate School of Medical Sciences, Kyushu University|Biostatistics Center, Kurume University
    • Akifusa Sumio
    • Section of Preventive and Public Health Dentistry, Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University|Department of Health Management, School of Oral Health Sciences, Kyushu Dental University
    • Shibata Yukie
    • Section of Preventive and Public Health Dentistry, Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University
    • Takeshita Toru
    • Section of Preventive and Public Health Dentistry, Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University
    • Ninomiya Toshiharu
    • Division of Research Management, Center for Cohort Studies, Graduate School of Medical Sciences, Kyushu University
    • Kiyohara Yutaka
    • Department of Environmental Medicine, Graduate School of Medical Sciences, Kyushu University
    • Yamashita Yoshihisa
    • Section of Preventive and Public Health Dentistry, Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University

Abstract

<p>This study examined the relationship between stimulated salivary flow rate and oral health status in an adult population. Multinomial multivariate logistic regression analysis was used to examine the associations of salivary flow rate with dental caries status and periodontal status at the individual level among 2,110 Japanese adults with ≥10 teeth. Then, a spline model was used to examine the nonlinear relationship between salivary flow rate and teeth with dental caries or periodontal disease in multilevel analysis. Odds ratios were calculated for a 1.0-mL/min reduction in salivary flow rate at a point. After adjusting for confounding variables, participants with a flow rate ≤3.5 mL/min had significantly higher odds ratios for high caries status, and participants with a flow rate ≤1.4 mL/min had a higher odds ratio for broad periodontal disease, than did those with a flow rate >3.5 mL/min. In spline models, the odds ratio for teeth with dental caries or periodontal disease increased with reduced saliva secretion. The present findings suggest that decreased saliva secretion affects both dental caries and general periodontal health status.</p>

Journal

  • Journal of Oral Science

    Journal of Oral Science 59(1), 55-62, 2017

    Nihon University School of Dentistry

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