Abstract
The purpose of this study was to measure the fluoride concentrations of various commercially available tea infusions, with a specific focus on risk of fluorosis. 100ml infusions of 43 different tea brands were kept at a constant temperature of 85°C and measured for fluoride concentration at 5, 15, 30, 60, and 120min using a fluoride ion-specific electrode and millivolt meter. After 5min at 85°C mean fluoride concentration, in μg/ml with standard deviation, was 2.08±1.24 for caffeinated tea infusions, 4.38±0.97 for decaffeinated tea infusions, and 0.05±0.02 for herbal teas. Caffeinated teas derived from the traditional source, Camellia sinensis, demonstrated significantly higher concentrations of fluoride than herbal teas (p<0.01). Furthermore, decaffeinated teas demonstrated significantly higher concentrations of fluoride than caffeinated teas (p<0.01). Some tea infusions may place a pediatric patient at higher risk for fluorosis if consumed as the primary source of hydration.
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