Abstract
Unerupted teeth and the overlying enamel organs and associated fibrous tooth follicles, collectively referred to as ‘supra-coronal tissue’ (SCT), were removed from mandibles of 3 pigs aged 7 months. Fluoride was determined in the SCT, dental papilla, surface enamel and bulk enamel. F concentrations averaged about 2.3 μg F/g wet wt SCT and 0.2 μg F/g dental papilla. There were statistically-significant positive correlations between F concentration in SCT and (a) the degree of mineralization (density) of enamel and (b) the F concentration in surface enamel. Ca and P were determined in the ash of SCT and dental papillae. Total water and extracellular fluid volume were also measured. The percentage of F extracted in water and 10 per cent EDTA, pH 6.5, was estimated. On the basis of these preliminary results, it is suggested that fluoride which accumulates in the tissue overlying the crown is loosely bound and that some is associated with calcium.
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