2 months ago
After whitening, the teeth are in a reversible demineralized state and more likely to stain. 48 hours after discontinuing chemical exposure, the buffering effects of the saliva will help remineralize the enamel and the teeth should be more resistant to foods that tend to discolor (red wine, colas, coffee, etc)
Web reference: http://www.bestseattledentist.com/html/teeth-whitening.html
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