Stain: Certain food cause staining of teeth. Cavities can also cause discoloration. Teeth which had endodontic treatment(root canals ) can also become discolored over time.
Answered 1/8/2015
5.6k views
Tooth decay: If you are referring to a specific area on the too changing color from white to yellow to black that is caused by tooth decay or cavity.
Answered 1/8/2015
5.6k views
4 doctors weighed in across 3 answers
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