Caries-preventive effect of a weak fluoride dentifrice combined with topical application of fluoride

弱氟牙膏联合局部涂氟的防龋效果

• 批准号: 06672039
• 负责人: MAYANAGI Hideaki
• 金额: $ 0.26万
• 依托单位: TOHOKU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06672039/
• 关键词: Epidemiology; Preschool children; Dental caries; Caries increments; Caries prevenntion; Topical F application; Fluolide dentifrice; Tooth brushing; 酸性弗素燐酸溶液

This study was undertaken to estimate the def reducing effect of a weak fluoride dentifrice (F : 100 ppm) combined with topical application of fluoride (APF). Children aged 4 to 5 years of three nursery schools in lwate prefecture were selected and studied for one year. The children were divided into two experimental groups and one control group by schools. Group A was one experimental group where the children were instructed to brush their teeth using fluoride dentifrice three times a day after meals. Group B was another experimental group. In this group, the condition was the same as the group A except the topical application of fluoride. The children in the group B were applied AFP twice a year. Group C was the control group where the children were instructed to brush their teeth three times a day after meals. The base line data of the groups were well balanced.The results may be summarized as follows :1.The new deft increments for one year were calculated in 3 groups. Mean deft increments were 1.75 in the group A.1.50 in the group B and 2.83 in the control group C respectively. Significant differences of mean deft increments were observed between the group A,B and the group C.These results showed the caries reduction of 38.2% in the group A and 47% in the group B.2.The new deft increments on posterior and anterior tooth segments for one year were analyzed. Mean deft increments on posterior tooth segments in both the group A (1.36) and group B (1.23) were significantly lower than that of the control group (2.33), showing the caries reduction of 41.6% in the group A and 47.2% in the group B.From this results, it was concluded that a weak fluoride dentifrice combined with topicl application of fluoride can be a useful technique for the prevention of dental caries in preshool children.

本研究旨在评估弱氟牙膏（F: 100 ppm）与局部应用氟化物（APF）相结合的降低效果。选取水县三所幼儿园的4 ~ 5岁儿童进行为期一年的学习。孩子们按学校分为两个实验组和一个对照组。A组是一个实验组，孩子们被要求每天饭后用含氟牙膏刷牙三次。B组为另一实验组。在这个组中，除了局部应用氟化物外，情况与A组相同。B组患儿每年应用AFP 2次。C组是对照组，孩子们被要求每天饭后刷牙三次。各组基线数据平衡良好。结果可总结如下：1。计算3组1年的新灵巧增量。a组的平均灵巧度增量为1.75，B组为1.50，C组为2.83。A组、B组和c组的平均牙量差异有统计学意义。结果显示，A组龋齿减少38.2%，B组龋齿减少47%。分析一年来前、后牙节新增灵巧量。A组（1.36）和B组（1.23）后牙段的平均灵巧增量均显著低于对照组（2.33），A组和B组的龋齿减少率分别为41.6%和47.2%。由此可见，弱氟牙膏联合局部涂氟是预防学龄前儿童龋齿的有效方法。