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作者采用邻面口内模型测定不同剂量氟在早期釉质龋损中对氟的摄入和再矿化的反应能力。选择30名健康成年人,随机分为3组,将两个带有人工釉质龋损的样本粘附在一个有功能的局部义齿中;采用3种不同含氟剂量的牙膏(安慰剂<0.5 ppmF,250 ppmF,1100ppmF)进行实验,在进入实验期前有1周的预备期,嘱参与者用该产品刷牙,此时样本不放入义齿中;接着开始为期4周的实验期,要求参与者每天刷牙3次,每次1min;实验期之后,取出样本分析氟的吸收和再矿化情况,并收集唾液分析其中氟的含量。每个参与
The authors used adjacent oral models to determine the response of different doses of fluoride to fluoride uptake and remineralization in early enamel lesions. Thirty healthy adults were selected and randomly divided into three groups. Two specimens with artificial enamel carious lesions were adhered to a functional partial denture. Toothpaste of 3 different fluoride doses (placebo <0.5 ppmF , 250 ppmF, 1100 ppm F), a one-week preparation period before entering the experiment period instructed participants to use the product to brush their teeth while the sample was not placed in the denture, and then started a four-week experimental period requiring the participants Brushing teeth 3 times a day, each 1min; after the test period, remove the sample analysis of fluoride absorption and remineralization, and collect saliva analysis of which fluorine content. Each participates