Effect of fluoride on ion exchange, remineralization and acid resistance of surface enamel.

Effect of fluoride on ion exchange, remineralization and acid resistance of surface enamel.
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氟化物对表面釉质离子交换、再矿化和耐酸性的影响。

DOI:
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发表时间:
1979
期刊:
Journal of oral pathology
影响因子:
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通讯作者:
F. Feagin
F. Feagin
中科院分区:
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文献类型:
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作者:
L. Aponte;F. Feagin

文献摘要

被引文献

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在离子活性恒定的系统中,在单独交换和再矿化的条件下,牙釉质中 F- 交换的速率取决于溶液中 F- 的浓度。表面矿物质的耐酸性是由于在 pH 值 7.0 和 4.5 时牙釉质中 F- 与 OH- 的交换所致。与 0.05 和 6.0 mM 的 NaF 水平相比,0.5 mM NaF 的水平导致 45Ca 同位素交换率最大,牙釉质的耐酸性最大。类似地,在存在和不存在再矿化的情况下,低水平的F-可用于龋齿预防。
In a system of constant ion activities the rates of F- exchange in enamel, under conditions of exchange alone and remineralization, depended on the concentration of F- in solutions. Acid resistance of surface minerals resulted from exchange of F- for OH- in the enamel at pH 7.0 and 4.5. The level of 0.5 mM NaF, compared to 0.05 and 6.0 mM, caused maximum rates of isotopic exchange of 45Ca and maximum acid resistance of enamel. Similarly low levels of F- may be feasible for use in caries prevention in the absence and presence of remineralization.