Ca and P Distribution in Sound, Demineralised and Remineralised Human Surface Enamel

Abstract

A new method for the determination of Ca and P in surface enamel is described. The Ca and P content in the surface layer is much higher than expected. During remineralisation a salt with a lower molar Ca/P ratio is formed in the subsurface lesion. Remineralisation stimulates the formation of this salt different from apatite. EHDP prevents the formation of this salt in favour of the salt originally present in sound enamel.