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作者用电极测定方法，观察不同氢高于浓度（ｐＨ）及不同浓度氟化物对牙釉质摄氟量的影响，以进一步探索氟化物的作用机理。实验用小牛牙制作试件，每牙分成块，分别用含２．７％ＮａＦ，ｐＨ４的酸性凝胶；２．７％ＮａＦ，ｐＨ７的中性凝胶；１％ＮａＦ，ｐＨ７的中性凝胶和空白凝胶处理，按ＭｃＣａｎｎ法测釉质内三层氟化物含量，用原子吸收分光光度计测酸蚀后釉质的溶出量。结果表明，经各组氟化物处理后釉质内层氟含量增加，提示有氟化物摄入；在同一氟浓度时，酸性氟化物使釉质摄入的氟比中性氟化物多；在相同ｐＨ时。高浓度氟凝胶使釉质摄入的氟比低浓度多。提示适当降低ｐＨ、提高氟浓度可增加氟制剂的防龋效果。
The authors used electrodes to determine the effect of different concentrations of hydrogen above the concentration (pH) and different concentrations of fluoride on fluoride content of enamel to further explore the mechanism of action of fluoride. Experiments were performed using calf teeth to make test pieces divided into blocks for each tooth, respectively using an acidic gel containing 2.7% NaF, pH 4, 2.7% NaF, neutral gel at pH 7, 1% NaF, Gel and blank gel treatment, according to the McCann method to measure the enamel three fluoride content, with the atomic absorption spectrophotometer erosive elution of enamel. The results showed that fluoride content in the enamel inner layer increased after each group of fluoride treatment, suggesting fluoride intake; at the same fluoride concentration, acidic fluoride enamel fluoride intake more than neutral fluoride; at the same pH . High concentration of fluorine gel enamel intake of fluorine than the low concentration. Tip appropriate to reduce the pH, increase the fluorine concentration can increase the anti-caries effect of fluoride preparations.