Fluoride Content in Asian Produced Green Teas
https://jcda.ca/l3 Share on Melissa E. Ing , DMD ; Britta E. Magnuson , DMD ; David L. Frantz , DMD Abstract Background: This study determined the fluoride content of green tea from various parts of Asia, where green tea originates. Methods We brewed 2.5 g each of 4 types of green tea (from China, South Korea, Japan and Sri Lanka) using deionized water heated to boiling. Water was cooled to 71°C, then tea was steeped for 2 minutes. This process was repeated 20 times, thus providing 20 samples for each tea type. In addition, 20 control samples of deionized water were brewed to the same specifications. Samples were analyzed using a fluoride probe, and statistical power was calculated. Results: The tea samples from different countries varied in the amount of fluoride they contain...