氟以及表面活性剂对牛牙釉质脱矿的影响

本研究旨在进一步了解氟化物以及表面活性剂（SAA）对牛牙釉质脱矿的影响。在体外模拟酸蚀模型，采用自制的钙离子选择性微电极测试不同处理组的钙离子浓度，并进行分析评价。结果显示：①牙釉质经氟化钠处理后其脱矿率明显低于单用酸蚀液组（P＜0．01）；②SAA和氟化钠合用与单用氟化钠组之间无显著差异（P＞0.05）。提示氟可通过增强牙齿组织的抗酸性，降低釉质表面的溶解度而抗龋；SAA的抗龋作用有待进一步研究。

The effects of fluoride and surface active agents of demineralization in bovine enamel

This investigation was undertaken to explore the effects of fluoride and surface active agents(SAA) on demineralization inenamel. Set up a acidic model in vitro, the free calcium conentration in the several test groups was determined and evaluated comparably using the self - made calcium ion - selective microelectrodes. The results showed that the rate of demineralization of sodium fluoride(NaF) - treated group was lower than that of the untreated group(P <0.01 ), while there was nostatistically significant difference between that of the SAA NaF and NaF - treated groups (P >0. 05). the results indicate that NaF may be an efficeent anti - caries agent by means of increase of anti - acid and decrease of solubility in enamelsurface, while the effect of anti - caries of SAA should be further studied.