There are two types of stains, extrinsic, those on the surface of the enamel and intrinsic ones that are formed inside the tooth
Extrinsic dental stains are more common and in most cases, it has to do with what you eat. Among the villains are dark foods and drinks such as coffee, red wine, black tea, sodas, and dark sauces.
The second type of stain, the intrinsic one is that which forms inside the tooth, when the enamel can no longer protect the surface. In addition to the acids, some medications can cause this type of stain.
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Question of
Were you aware of this?
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Yes
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No
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Question of
What do you do to prevent it?
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I brush my teeth two to three times a day
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I go to the dentist regularly
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I avoid some types of food
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I do nothing
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Other
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I am waiting for nanotech teeth
Going to the dentist is my answer, plus I brush regularly as well.
My answer was more like all of the above.