The Sr content of surface enamel of 233 teeth from nine communities was related to drinking water Sr concentrations. These water concentrations ranged from 0.02 μg/ml to 33.9 μg/ml. The relationship between enamel concentrations and water concentrations was linear for water concentrations less than 10μg/ml Sr, but leveled off at approximately 300 μg/gm Sr in the enamel for communities with greater than 10 μg/ml Sr in drinking water. Binding of Sr to components in the oral environment is proposed as an explanation of this effect.
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