学校歯科保健対策における歯口清掃指導およびふっ素洗口法の評価

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  • Comparing the Prevalence of Dental Caries among School Children who were given Tooth Brushing Instructions and those who rinsed their Mouths with Fluoride in a School Dental Health Program
  • ガッコウ シカ ホケン タイサク ニ オケル シコウ セイソウ シドウ オヨビ

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Five hundred and two 1st year children in junior high school from four different primary schools in the Tsubame district of Niigata prefecture were examined for dental caries and plaque accumulation by the blind recording method in May 1980. The children were divided into four groups, A, B, C and D. Groups A and B were not given noteworthy instruction or treatment for the care of their teeth in primary school. Group C was given instruction in brushing their teeth after lunch at school every day from the beginning of primary school. Group D rinsed their mouths with sodium fluoride solution three times a week from the first grade in primary school. The average number of DMF surfaces per child in groups A and B was 8.24 (SE=0.54) and 8.70 (0.54), respectively. In group C it was 7.99 (0.47) and in group D it was 4.56 (0.41). In comparison with the control group (average of A and B) the caries reducation rate in group C was 5.8%, which is not significant statistically. But in group D the caries reduction rate was 46.2%, which is significant statistically.<BR>The mean plaque accumulation and treated carious teeth rate did not differ in the four groups.<BR>The average number of DMF teeth per child in the 6 th grade in primary school children who will enter group D was 4. 84 (0.26) when the mouth rinsing program commenced in 1973, and after 8 years in 1981 it was 3.00 (0.27). The caries reduction rate was 38%, which is significant statistically.<BR>Tooth brushing instruction after lunch every day in primary school was not effective for caries prevention. But mouth rinsing with sodium fluoride three times a week showed great effectiveness and the caries reduction rate was approximately 40%.<BR>In conclusion, this paper discusses the most effective method for caries prevention in school dental health program.

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