Months: It can last months. However it depends on your diet (coffee and tea stain your teeth), oral hygiene and if you smoke.
Answered 11/10/2012
5.5k views
Bleaching: It is different for everyone. Our teeth darken naturally with age. When you bleach your teeth, it bleaches the entire tooth, not just what the bleach touches. I believe all the things that stain our teeth (surface staining ) like caffeine, smoking , red wines, can be cleaned off by the hygienist.There are no rules to shade, it is a matter of what makes you happy when you look in the mirror.
Answered 12/12/2012
5.4k views
7 doctors weighed in across 2 answers
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