Teeth Bleaching or Tooth whitening is a treatment for getting stain free teeth.But before solutions are sought, the causes should be known. Tobacco, whether smoked or chewed, is one of the largest causes of stained teeth. Other possible causes include fruit juices(especially grape), red wine, fruits such as blueberries, soy sauce, and curry.However, other less known items such as coffee, tea, and colas also contribute greatly towards tooth discoloration.
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