Relationship between first molar caries and eating and tooth brushing habits in elementary school children

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  • FUJIWARA Aiko
    Human-care Science, University of Tsukuba Graduate School of Comprehensive Human Department of Dental Hygiene, University of Shizuoka Junior College
  • TAKEDA Fumi
    Human-care Science, University of Tsukuba Graduate School of Comprehensive Human

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  • 小学生の第一大臼歯齲蝕と 2 年生時の食生活習慣および歯みがき習慣との関連
  • ショウガクセイ ノ ダイ1 ダイキュウシ ウショク ト 2ネンセイジ ノ ショク セイカツ シュウカン オヨビ ハミガキ シュウカン ト ノ カンレン

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Abstract

Objective The aim of the present study was to elucidate the relationship between eating and tooth brushing habits in the second grade of elementary school with first molar caries in the third to sixth grades.<br/>Methods Subjects were 130 students at one elementary school in the Tokai region who were in the second grade in 2002, for which eating and tooth-brushing habits were ascertained by a self-administered questionnaire survey. A follow-up survey was conducted based on the 2002 to 2006 school dental examination record and analyses were performed on data from 104 students without first molar dental caries in the second grade.<br/>Results The incidences of first molar caries in the third grade were higher among students who ate cookies at least once daily or every 2 to 3 days, compared with those who ate cookies once a week or not at all in the second grade. Incidences were also higher among those whose daily frequency of tooth brushing was once or sometimes compared with twice or three times or more. Furthermore, the incidences of first molar caries in the fourth, fifth and sixth grades were higher among students who ate candy at least once daily or every 2 to 3 days, compared with those who ate candy once a week or not at all in the second grade.<br/>Conclusion The intake frequency of cookies was related to the first molar caries in the third grade, and of candy for that in the fourth to sixth grades. Moreover, first molar caries in the third grade were also related to the daily frequency of second-grade tooth brushing. These findings suggest the importance of measures encouraging lower-grade elementary students to establish and maintain habits of tooth brushing and of limiting consumption of sweets, such as cookies and candy, in order to prevent caries in their permanent teeth during elementary school.

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