八幡市(平原)児童の歯の健康調査

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A survey was conducted on the tooth health status in a group of children attending one of the grade schools in Yawata city, and the data obtained were compared with the comparable data obtained by Ninomiya in 1951 for Kokura city children and in 1958 by Shigyo for Saga city children. The results were summarized as folIows. 1) Average number of existing deciduous teeth The number in Yawata male children exceeded that in the female children, but was smaller than the number in Kokura city children of both sexes and that in Saga city female children. There was no difference between the groups of male children in Yawata and Saga cities in this respect. 2) Average number of erupted permanent teeth The number in Yawata city female children was larger than that in Yawata city male children and also larger than that in Kokura city children of both sexes. Yawata city male children had more teeth as compared to Saga city children of both sexes. However in the female sex there was scarcely difference between two city groups. 3) Morbidity rate of decayed deciduous teeth The rate was higher in the male than in the female in Yawata city children, and this was also higher than the one found in Kokura city children of both sexes. Comparison between Yawata and Saga groups revealed that the rates were almost identical with the male sex, but that with the female sex the rate in Saga city was higher than tnat in Yawata city. 4) Average number of def teeth The number in Yawata city male childten was larger than that in the female, and among groups of Yawata and Kokura cities Yawata male children had more def teeth than Kokura male children while Kokura female children had slightly more def teeth than Yawata female children. Among groups of Yawata and Saga cities, the Saga groups of both sexes had more def teeth than the corresponding Yawata groups. 5) Morbidty rate of decayed permanent teeth The rate in Yawata female children was larger than in Yawata male children and this Yawata male rate was slightly higher than Kokura male rate. In the female there was hardly difference between two cities. Comparison between Yawata and Saga city groups showed that the rate in Yawata city female was higher than that tn Saga city female while there was scarcely difference between the male groups of both cities. 6) The average number of DMF teeth The number in the female was larger than that in the male in Yawata city, and the numbers for both sexes in this city were smaller than those in Kokurs city. Among Yawata and Saga city groups there was scarcely difference between the male groups, while Yawata female group had more DMF teeth than Saga female group.
九州歯科学会の論文

八幡市(平原)児童の歯の健康調査

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