母親の初産年齢と第一子の乳歯齲蝕罹患との関係

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  • Age of the Mother as a Caries Risk Factor Among First-born Children

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The aim of this study was to investigate the relationshi p between the age of the mother to the prevalence of dental caries of first-born children participating in a health care program in Ishii-cho, Tokushima, Japan. A total of 2,067 pairs of mother and child participated in this study and the children were examined at ages one year-six months, two years-six months, three years-six months and five years of age.<BR>The mother and child pairs were sorted into four groups according to the age of the mother at the time of the birth of the first-born children (G 1: 22 years and below, G 2: 23-28 years, G 3: 29-34 years, G 4: 35 years and over)<BR>The following results were obtained:<BR>1) At one year six months children in G 4 had the highest caries prevalence and mean df score.<BR>2) At two years-six months children in G 1 had the highest caries prevalence and mean df score.<BR>3) At three years-six months children in G 1 had the highest caries prevalence and mean df score.<BR>4) At five years children in G 3 had the lowest caries prevalence and mean df score.<BR>5) At one year-six months the percentage of children that had not been weaned was highest in G 1and G 4, and that was lowest in G 3.<BR>6) At one year-six months the percentage of children who were bottle-feeding while sleeping was highest in G 2 and G 4, and that was lowest in G 3.<BR>7) At all ages, the number of mothers who brush their children's teeth daily was lower in G 1. Daily brushing of the teeth of the children by the mothers was highest at age two years-six months but was lowest at five years in G 4.<BR>Findings of this study suggest that age of the mother is a risk factor in the development of dental caries among first-born children.

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