牙釉质上氟化钙的形成及其对磷灰石晶格中氟摄取的影响。

Calcium fluoride formation on enamel and its influence on uptake of fluoride in the apatitic lattice.

作者信息

Larsen M J, Jensen S J, Thorsen A

出版信息

Scand J Dent Res. 1977 Jul;85(5):327-33. doi: 10.1111/j.1600-0722.1977.tb01511.x.

DOI:10.1111/j.1600-0722.1977.tb01511.x

PMID:19841

Abstract

Human dental enamel was exposed to a pH 4 buffer containing 150 parts/10(6) fluoride. It was found that due to the arising degrees of saturation with respect to calcium fluoride and apatites, surface enamel dissolved coincident with a formation of calcium fluoride. The calcium fluoride redissolved while it kept the liquid saturated with respect to this salt. During this second period, fluorapatite was formed while hydroxyapatite dissolved. Finally, all calcium fluoride was dissolved and the unreacted fluoride was taken up in the apatitic lattice. The results are discussed with reference to the conditions of the oral cavity and enamel solubility experiments.

摘要

将人类牙釉质暴露于含有150 ppm氟化物的pH 4缓冲液中。结果发现，由于相对于氟化钙和磷灰石的饱和度增加，表层牙釉质溶解的同时会形成氟化钙。氟化钙会重新溶解，同时使液体保持对该盐的饱和状态。在这第二个阶段，氟磷灰石形成，而羟基磷灰石溶解。最后，所有的氟化钙都溶解了，未反应的氟化物被吸收到磷灰石晶格中。结合口腔环境和牙釉质溶解度实验的条件对结果进行了讨论。