齲蝕ハイリスク児童の選択基準に関する検討 : 第2報,フッ素洗口を実施している小学校を対象として

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The purpose of this study is to analyze the relationship between the deciduous dental caries at the 1st grade (6 years old) and dental caries of permanent dentition at the 6 thgrade (11 years old) by follow-up examination in same person. It is very important to predict a high dental caries children and to start preventive care for dental caries incidence in the permanent dentition as early as possible. In the first report, the authers cleared the relationship of canines and molars dental caries (C-Mdmft) in deciduous dentition and erupted permanent teeth by oral examination (the 1st garde), or addition permanent dental caries (the 3rd grade) to permanent dental caries at the 6th grade. High caries risk children (DMFT≧S) were defined by the criterion that in the children who are corresponding to 25% or 33% of higher ranking of cumulative DMFT at the 6th grade. In order to determine the best screening criterion, ratios of sensitivity, specificity, false-positive and false-negative were computed to plotte in ROC (receiver operating characteristic) curves. The best screening criterion was determined by analyzing the longitudinal caries date from 72 (Male:33, Female:39) Kongo elementaly schoolchildren in Shiroishi-ku Sapporo, Hokkaido. High dental caries risk children were selected by application of this screening critrior to other primary schools, were pridecated that the mean number of DMFT would be 5 or more at the 6th grade. However, this screening was not available for Noboribetsu elmentaly school which had been adopting a flouride mouth rinsing program (with 0.1%-NaF every weeks), because of their low caries experience at 11 years old. The authers surveyed to analyze the relationship between the deciduous dental caries and number of erupted permanent teeth at the 1st grade and permanent dental caries at the 6th grade in Noboribetsu primary school again (in Noboribetsu, Hokkaido). The subjects used in this study were born april in 1982 to march in 1983, and numbers were 46 (Male:25, Female:21). New screening criterion was established at elementaly school adopted a flouride mouth rinsing program. Conclusion were as follow: 1. It appeared that significant correlation was existed between the number of C-Mdmft+erupted permanent teeth (at the 1st grade) and number of DMFT (at the 6th grade) (P <0.001), and existed between C-M dmft+erupted permanent teeth (at the 1st grade) included permanent dental caries (at the 3rd grade) and DMFT (at the 6th grade)(P <0.001) 2. It was determined high caries risk children who are corresponding to 25% or 33% of higher ranking of cumulative DMFT at the 6th grade, rinsed mouth with flouride at elementaly school, had 4 or more DMFT at 6th grade. 3. New best screening criterion (DMFT≧4) at C-M dmft+erupted permanent teeth≧14 (1st grade) resulted in a sensitivity ratio of 0.667, specificity of 0.647, positive predictive value of 0.400, and negative predictive value of 0.846. In the 3rd grade, new criterion at C-M dmft+erupted permanent teeth+3DMFT≧16 resulted in sensitivity ratio 0.750, specificity of 0.735, positive predictive value of 0.500, negative predictive of value of 0.893. 4. New screening criterion and the first reported criterion were adapted to Date elementaly school (in Date, Hokkaido), which practise a flouride mouth rising program, and then by new criterion was predicted more high caries risk children than by the first criterion. But, both creterion were showed low positive predictive value. This method of select for high caries risk schoolchildren is easy, efficiency and economical. So that, regionally new criterion should be establesh in order to select for more efficiency high caries risk shcoolchildren.
北海道医療大学の論文
1994-06-30

齲蝕ハイリスク児童の選択基準に関する検討 : 第2報,フッ素洗口を実施している小学校を対象として

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