歯牙齲蝕症の疫学的研究 : 水質・土質と齲歯との関係

概要

論文の詳細を見る
Dental examination has been conducted on a total of 4794 youngsters of both sexes ranging in age from 6 to 15 residing in Mimata-machi along the river Hagihara, in Yamada-machi along the river Marutani and in Nishidake district along the river Yasunaga, all with approximately similar socio-economic condition. Endemic study was also undertaken on the physico-chemical constituents of the soil and the river water, domestic trades and amount and quality of food consumed by each subject per week with special reference to the incidence of dental caries. Results obtained were summarized as follows. Dental decay was found most abundant in Nishidake district, followed by Yamada-machi and Mimata-machi in decreasing order. The socio-economic status of the inhabitants was richest in Mimata-machi, followed by Yamada-machi and Nishidake district in decreasing order, demonstrating an inverse relation with the dental caries incidence among three distrits. Of various reasons conceivable for the difference of caries rate among these people, the most probable one was the relatively high concentration of SiO_2 among the mineral components of soil and water examined, since silicon dioxide are believed to disturb normal calcification of the tooth.
九州歯科学会の論文
1963-03-31