Stains: There could be a number of different causes. Coffee/tea/tobacco are not the only things that can stain teeth. If you have not seen a dentist or had your teeth cleaned by a dental hygienist lately then that would be a good place to start. Chances are it's just tartar that needs to be removed, but it could also be the start of a cavity, or a leaky silver filling.
Answered 8/4/2015
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