In Taiwan, people in ancient society didn’t have decayed teeth. Research shows that those people who often drank oolong teas after meals didn’t have dental caries. That’s the reason why dentists weren't popular in the ancient society.
Here’s one of the benefits of drinking tea:
Anti-caries:
Drinking teas, especially drinking oolong teas can prevent teeth from decay. That’s because of high fluoride content in oolong teas. Fluoride ions have a great affinity to the calcium of the teeth. It is difficult to dissolve in the acid for the synthesis of " fluorapatite", just like to add a protective layer onto the teeth, and enhance the ability of anti-acid and anti-caries for teeth. The rate of dental caries in those who drink oolong teas is 60% lower than in those who don’t.
Translated and edited by Adm./Fong Mong Tea Corp, all rights reserved.
Origin from: https://kknews.cc/zh-tw/health/vzvol.html