健全歯所有生徒についての疫学的研究
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概要
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An investigation regarding dental caries was undertaken by the Japanese Ministry of Health and Welfare in 1969. This study revealed that almost all Japanese students have some form of dental caries. Various preventive measures have been studied but the effectiveness of most of these measures is doubtful. This is partly due to the fact that dental caries have a multifactorial related etiology although it is recognized that certain bacterial microorganisms act as agents.In order to elucidate these factors, caries free subjects (Group A: 180 boys, 108 girls) were grouped from the second year of 18 junior high schools in Kyoto City and a comparison was made with a control group (Group B: 190 boys, 181 girls) regarding the following items:1) Daily routine for oral hygiene.2) Health conditions at birth and infancy.3) Daily nutrition.4) Body build and development since the first year of school attendance.5) Number of decayed deciduous teeth at the time of primary school age.6) Parent's daily routine for oral hygiene.7) Dental caries of parents.8) Size and occupation of family.It was clealy recognized that the number of decayed deciduous teeth during early primary school years and the number of dental caries among parents was less in Group A than B.Regading environmental factors such as nutrition, daily routine for oral hygiene and size of the family, occupation, no factors were definitely related to the development of dental caries.It is therefore recommended that environmental factors which are directly connected with effective preventive measures for dental caries should be re-examined by a comparison of pupils with the same host factors but under different environmental conditions.
- 日本衛生学会の論文