Proper drinking of green tea can prevent moths. Because green tea is rich in fluoride necessary for teeth, and fluoride is an important substance for whitening and strengthening teeth, this substance can play a role in preventing acid and moth when combined with apatite in teeth. This is why most toothpastes contain fluorine. Of course, drinking green tea properly can also make people keep their breath fresh and always have a refreshing mental state.

However, drinking tea for a long time will make the tooth surface covered with a layer of enamel, which is transparent or translucent, and its deep layer is dentin, which is light yellow. The color of healthy teeth is deep dentin, which is pale yellow through enamel.

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/health.people.com.cn/n/2015/0923/c 21471-27625051.html "target =" _ blank "title =" People's Daily Online. People's Daily Online-Long-term drinking tea makes teeth yellow and whitening toothpaste has limited whitening effect.