STUDY ON FACTORS FOR CARIES AND INFANT FEEDING CHARACTERISTICS IN CHILDREN AGED 1.5~3 YEARS IN A KANTO URBAN AREA

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  • MIZOGUCHI Kyoko
    District Health and Welfare Section, Kawasaki-City Nakahara Health and Welfare Center
  • KURUMADO Katsumaro
    President of Kawasaki City College of Nursing (Former Head of Kawasaki-City Nakahara Public Health Center）
  • TANGO Toshiro
    Director, Department of Technology Assessment and Biostatistics, National Institute of Public Health
  • MINOWA Masumi
    Director, Department of Epidemiology, National Institute of Public Health

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Other Title
  • 関東都市部における1歳6か月時から3歳時にかけてのう蝕発生と授乳状況ならびに関連する要因の検討
  • カントウ トシブ ニ オケル 1サイ 6カゲツジ カラ 3サイジ ニ カケテ ノ ウショク ハッセイ ト ジュニュウ ジョウキョウ ナラビニ カンレン スル ヨウイン ノ ケントウ

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Abstract

Purposes Generally, the incidence of caries in infants is decreasing, but the volume for children age 3 at Nakahara Ward in Kawasaki City is nearly 5 times higher than that of children at one year and 6 months of age (age 1.5). Here, we investigated the risk factors for cariogenesis during the period from age 1.5 till age 3, focusing on the household environment, lifestyle, diary habits and dental hygiene behavior.<br/>Methods A total of 491 children who had no caries at periodical health check at age 1.5 were chosen as subjects from those undergoing health check at our Public Health Center. The health check data at ages 1.5 and age 3 along with findings from the questionnaire survey at age 3 were analyzed by with reference to the presence or absence of caries in children at age 3. Odds ratios and 95% confidence intervals (CI95) were first estimated for each risk factor to identify those highly correlated to cariogenesis. Then, logistic regression analysis was performed after adjustment for mutual correlation among the factors.<br/>Results The risk factors significantly correlated to cariogenesis during ages 1.5~3 were maternal feeding at age 1.5 (Odds ratio: 2.80, CI95: 1.42~5.57) and sweet intake of sweets 3 times or more everyday at age 3 (Odds ratio: 2.07, CI95: 1.24~3.43). Moreover, the lack of nightly teethbrushing by parents appeared linked with cariogenesis, (Odds ratio: 1.68, CI95: 0.90~3.14), albeit without statistical significance.<br/>Conclusion The present results indicate that caries is likely to be increased when maternal feeding is prolonged to age 1.5 and by consumption of sweets more than 3 times a day at age 3.

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