Is it true that your teeth will turn yellow when you drink coffee often?

 Coffee contains a brown-yellow substance called tannin or tannic acid, which is related to the yellowing of teeth
.
Tannic acid is a complex polymer compound.
It is light yellow or brownish-yellow powder at room temperature.
It has a very astringent taste, is soluble in water, easy to absorb moisture, and is easily oxidized in the air.
After oxidation, the color becomes darker.
In the bark and fruit of many kinds of trees
.
 Our teeth are actually not as smooth and flat as the surface looks, but there are many tiny holes
.
After drinking coffee for a long time, tannins will precipitate and adhere to the teeth, and then penetrate into these micropores
.
As time goes by, tannins accumulate and deepen in the teeth.
If things go on like this, the teeth will turn yellow
.
What should we do to deal with the problem of yellowing teeth after drinking coffee for a long time? People who drink coffee for a long time can try to add milk to coffee.
Tannic acid has the property of precipitating protein.
It can bind with casein in milk to prevent tannic acid from penetrating into the teeth, thereby weakening the staining effect of coffee on teeth; You can choose to drink coffee with a straw.
Using a straw can reduce the contact area between the teeth and the coffee, and reduce the staining effect of coffee on the teeth
.
 In addition, you can rinse your mouth after drinking coffee to dilute the coffee remaining in your mouth, which can also prevent your teeth from staining to a certain extent
.
One thing to note is that you should not brush your teeth immediately after drinking coffee.
The acidic substances in the coffee will soften the enamel on the surface of the teeth.
Brushing at this time will destroy the enamel.
It is best to wait for the enamel half an hour after drinking the coffee.
Return to normal and brush your teeth
.