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The concentration of aluminium and strontium was determined (by AAS) in soil (total and exchangeable), drinking water and dental enamel from an area (Zemunik) with low caries prevalence (DMFT < 2). For comparison purposes, similar samples were collected and analyzed from another village (Novigrad) in the same region with normal caries prevalence (DMFT > 5). A positive correlation between low caries prevalence and a higher concentration of strontium in soil (exchangeable form), drinking water and enamel was found. The distribution of strontium in dental enamel was shown to be fairly uniform. The concentration of aluminium in drinking water and the exchangeable form in soil was higher in the area of Zemunik.
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Vrbic et al. (2009) studied this question.
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