Tooth staining is any discolouration that occurs in or on your tooth surfaces. Staining can be internal (called intrinsic) or external (called extrinsic). It can range from mild to severe and can be localized to one or a few teeth or generalized to most teeth....
What Causes Stained Teeth? There are two main types of yellowed or stained teeth, which are referred to as intrinsic stain or extrinsic stain. Intrinsic stain, is stain that is located deeper in the teeth or stain that occurred while the teeth were forming. Extrinsic...
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