In a combined microprobe-microradiography experiment the calcium concentration and the mineral content has been measured in sound, decalcified and in decalcified SnF2-treated enamel. The calcium content was estimated by the microprobe along the densitometric path of the radiography experiment. The results suggest the possibility that in the decalcified area a considerable amount (about 10–14 wt%) of the mineral is present either as precipitated ortho-phosphates or is adsorbed as Ca++ and HPO4 = ions. Only a few wt% of calcium is lost from lesion and surface layer. In enamel treated with stannous fluoride demineralization was less than in untreated specimens.

Keywords:
Enamel, Mineralization
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© 1974 S. Karger AG, Basel
1974
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