乳幼児のう蝕に関するコホート研究

[A cohort study on dental caries in infants].

抄録

乳幼児のう蝕予防にどのような手技が有効かを明らかにするためにコホート研究を行った。対象は、岐阜市中央保健所を受診し、う蝕のないことが確認された18ヵ月児878人である。対象者は18ヵ月児と3歳児歯科健診を受診し、う蝕罹患率と口腔衛生状態（プラークスコア）のデータを得た。また、子どもの食間の食習慣と母親による毎日の歯磨き習慣に関する情報を母親から得た。う蝕罹患率は、口腔衛生状態が良好な子どもで31.5％、不良な子どもで43.3％、毎日の歯磨き習慣がある子どもで30.9％、ない子どもで38.5％、間食習慣がある子どもで41.0％、ない子どもで29.2％であった。ロジスティック回帰分析の結果，母親による毎日の歯磨きよりも，口腔衛生状態や食間の食習慣の方が重要であることが示された．

A cohort study was performed to determine what techniques are effective in dental caries prevention in infants. Subjects were 878 children aged 18 months, who visited the Gifu-shi Central Public Health Center to receive the medical health check and who were found to be dental caries free. The subjects received both 18 months and 3 years old dental health examinations which included data on incidence of dental caries and oral hygiene conditions (plaque score). Information on the children's between-meals eating habits and mother aided daily tooth brushing habits were obtained from their mothers. Caries incidence was 31.5% and 43.3% in children with good and poor oral hygiene conditions, 30.9% and 38.5% in children with and without daily brushing habits, and 41.0% and 29.2% in children with and without between-meals eating habits, respectively. Logistic regression analysis indicated that oral hygiene conditions and eating habits between meals were more important than mother aided daily tooth brushing.