Analysis of Caries Risk Factors Using the Results of Infant Dental Health Checkups Conducted in a Single Akita Municipality

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  • KOMATSUZAKI Akira
    Department of Preventive and Community Dentistry, The Nippon Dental University, School of Life Dentistry at Niigata
  • KOMATSU Yoshinori
    Komatsu Dental Clinic
  • SUETAKA Takehiko
    Department of Preventive and Community Dentistry, The Nippon Dental University, School of Life Dentistry at Niigata

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Other Title
  • 秋田県某市H地区での幼児期う蝕リスク要因の検討 : 幼児歯科健康診査へのDentocult®-Strip mutansの導入
  • 秋田県某市H地区での幼児期う蝕リスク要因の検討--幼児歯科健康診査へのDentocult-Strip mutansの導入
  • アキタケン ボウシ H チク デ ノ ヨウジキウショクリスク ヨウイン ノ ケントウ ヨウジ シカ ケンコウシンサ エ ノ Dentocult Strip mutans ノ ドウニュウ

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Abstract

Attaching marked importance to continuous dental health guidance based on caries risk assessment, a certain district of Akita Prefecture has begun accumulating the records of infant dental health examinations and initiated Dentocult®-SM tests. In this study, we analyzed caries risk factors using those accumulated data, and considered what is important when we provide dental health guidance. The subjects were 245 children who underwent all recommended dental health examinations at the age of one year and six months, two years, and three years. Comparisons were made between the findings of the questionnaire survey involving their guardians by interview, the change in the number of dft, and Dentocult®-SM scores. As a result, it was found that 142 infants (58.0%) were caries-free throughout the period under review, 43 (17.6%) had caries at age 2, and 60 (24.5%) at age 3. The rate of those infants with Dentocult®-SM scores of 2 or 3 was 12.7% at the age of 18 months. The rate increased to 25.7% at age 2 and over. A significant difference between the two was recognized (p<0.01). When the numbers of dft and Dentocult®-SM scores registered in each examination were examined in comparison with the findings of the questionnaire survey, we found that there were significant differences in the rate of respondents who checked off "toothbrushing by caretakers" and "need to teach" in the queries about eating between meals and beverage drinking (p<0.01, p<0.05) for 2-year-olds. Logistic regression analysis was performed with the number of dft at age 3 as a dependent variable. The results showed that the odds ratio of Dentocult®-SM scores (6.524, p<0.01) to "kind of sweet beverage" (2.582, p<0.05) was significant. All these findings suggested that helping small children form good eating habits and toothbrushing by caretakers play important roles in the prevention of caries while they are under the age of 2, as colonization by Str. mutans is marked during this period.

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