A statistical analysis of cariogenic factors from dental examinations of elementary school children in Shiroishi, Sapporo Part 1. Questionnaire survey of first grade children

P(論文)On the basis of the dental examination of 503 first grade pupils (250 boys and 253 girls) at elementary school form 1993 to 1998 in Shiroishi, Sapporo and questionnaires to the mothers concerning nursing methods, dietary habits, tooth brushing habits, etc., factors associated with dental caries were investigated (deciduous canine and deciduous molar : C-M dmft). The Mann-Whitney U test, chi-square test, and the first class of Hayashi's quantification methods carried out discriminant analysis. The were slightannal decrease in the C-M dmft index, DMFT index, C-M dmft person rate, and DMFT person rates. 2. These were significant differences in the C-M dmft and the items "order of birth", "age at end of weaning", "frequency of between-meals", "watching TV at meals", "mother's experience of dental caries", "experience of fluoride application", "understanding of child's oral condition". 3. There was multicollinearity in some items, these relationships were surveyed and correlation between items was established. Further analysis excluding the multicollinearity showed the items causing primary canine and molar dental caries. 4. The factors associated with deciduous canine and molar dental caries prevalence were "understanding of child's oral conditions", "mother's experience of dental caries", "age at end of weaning", "experience of fluoride application", "order of birth", "frequency of between meals", "watching TV at meals" adn so on in order of partial correlation coefficients. The findings showed that dental caries of schoolchildren were affected by the mother's nursing attitude towards the child.departmental bulletin pape