| 不同氢离子浓度和氟浓度对牙釉质摄氟的影响 |
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| 引用本文： | 冯希平 乌爱莉 沈立群. 不同氢离子浓度和氟浓度对牙釉质摄氟的影响[J]. 上海口腔医学, 1994, 3(2): 90-91 |
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| 作者姓名： | 冯希平 乌爱莉 沈立群 |
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| 作者单位： | 上海第二医科大学口腔医学院口腔预防教研室 |
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| 摘 要： | 作者用电极测定方法，观察不同氢离子浓度（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，每牙分成一块，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。
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| 关 键 词： | 牙釉质 氟浓度 氢离子浓度 氟化物 摄入 酸蚀 影响 探索 作者 提示 |
Changes of enamel intake of fluoride amount while PH and fluoride concentration varies] |
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| X P Feng,A J Wu,L Q Shen. Changes of enamel intake of fluoride amount while PH and fluoride concentration varies][J]. Shanghai journal of stomatology, 1994, 3(2): 90-91 |
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| Authors: | X P Feng A J Wu L Q Shen |
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| Affiliation: | Department of Preventive Dentistry, Ninth People's Hospital, Shanghai Second Medical University. Shanghai 200011,China. |
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| Abstract: | The four enamel pieces,which are from one bovine tooth,are treated individually by 2.7% NaF gel(pH4),2.7% NaF gel(pH7),1%NaF gel (pH7.0) and the control group gel.The fluoride amount in enamel pieces is measured by fluoride electrode.The aim of present study is to observe the changer of enamel intake of fluoride amount when the pH and fluoride concentration varies.In results the most fluoride amount in enamel pieces treated by 2.7% NaF gel(pH4) is measured.The more fluoride amount is measured in group of 2.7%NaF gel(pH7) than 1% NaF gel (pH7).The Results show lower pH and higher fluoride concentration can increase more fluoride amount in enamel. |
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