What Is Tooth Whitening?
Tooth whitening is a process that ?bleaches? the teeth, removing it of stains on the enamel and dentin to affect a lightening of any discoloration present. A common tooth whitening procedure uses carbamide peroxide poured over a custom mouth-guard worn over the teeth.
What Is Tooth Discoloration?
Defining tooth discoloration depends upon its many causes and it is important to distinguish between an external and internal stain.
? external stains: tobacco, tea, coffee and juices like grape and apple, coffee, tea and tobacco
? internal stains: excessive fluoride (during teeth formation), aging, trauma, nerve deneration, tetracycline (while teeth are forming)
Only professional whitening procedures such as the custom tray b View the rest of this article
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