Abstract
Background: Green tea being a rich source of fluoride, may provide anti-caries benefits when incorporated in toothpaste formulation.
 Aim: To estimate the concentration of fluoride in dry green tea extract.
 Methods: Prior to the estimation of fluoride in the sample, the dry green tea extract powder was tested for its physical characteristics, analytical characteristics, active ingredients and contaminants. Microbial assay was done for quantifying E. Coli, yeast and Salmonella. Fluoride estimation was done by IS 3025 P 60 method.
 Results: Fluoride was not detected in the dry powder extract of green tea dry extract powder.
 Conclusion: Green tea powder extract incorporated in herbal toothpastes cannot be read as a natural substitute of fluoride in toothpaste.
Highlights
Tea is the richest vegetarian source of fluoride [1]
Concentration of fluoride released from powdered tea leaves have been reported only from studies where subsequently the dry powder was treated with artificial gastric acids and intestinal secretions [4]
The fluoride estimation test was negative, i.e. fluoride was not detected in the given sample of green tea powder extract
Summary
Tea is the richest vegetarian source of fluoride [1]. Concentration of fluoride released from powdered tea leaves have been reported only from studies where subsequently the dry powder was treated with artificial gastric acids and intestinal secretions [4]. Green tea being a rich source of fluoride, may provide anti-caries benefits when incorporated in toothpaste formulation. Aim: To estimate the concentration of fluoride in dry green tea extract. Methods: Prior to the estimation of fluoride in the sample, the dry green tea extract powder was tested for its physical characteristics, analytical characteristics, active ingredients and contaminants. Conclusion: Green tea powder extract incorporated in herbal toothpastes cannot be read as a natural substitute of fluoride in toothpaste
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