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In a previous report (1983) we demonstrated the specific color reaction of Resazurin Disc for a screening test of caries activity. In this study, we investigated the relationship between the Resazurin Disc (RD) test score and caries prevalence with statistical analysis. A clinical trial was carried out for 136 kindergarten children aged from 3 to 5 years. The subjects of this study were classified by rating four scores (-, +, _??_, _??_) based on the color change of the RD within 15 minutes at 32-37 °C.<BR>A high statistical significance was obtained in the relationship between the RD test score and df teeth and df surfaces per person (p <0.01). In the ridit analysis, a clear tendency toward stepwise increase of caries prevalence (df rate) was observed with increasing RD test score. Furthermore, when the scores were divided into (-·+) and (_??_·_??_), the statistical significance of the relationship was established (p<0.005). These results indicated that the scoring of the RD test applied for clinical screening reflected substantially individual caries activity related to the present status of caries prevalence. Analysis of specific tooth prevalence (df rate) also revealed a high statistical significance in regard to deciduous upper incisors and deciduous molars.<BR>As a cario-static agent for deciduous caries teeth, application of Diamine Silver Fluoride (DSF, Saforide ®) is widely used in this country. In the case of this study, 23.5% of the subjects were treated with DSF. Therefore, we compared the RD test score and caries prevalence between children receiving DSF treatment and those not receiving it. In spite of a lower RD test score, caries prevalence was significantly higher in DSF treated children (p<0.001). Subjects treated with DSF must be eliminated in the statistical analysis because of DSF influence on caries activity due to the anti-bacterial action.
- 有限責任中間法人 日本口腔衛生学会の論文
有限責任中間法人 日本口腔衛生学会 | 論文
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