Peroxides: The use of whitening tooth paste that has peroxide will help. Better and longer results are only accomplished with whitening materials dispensed by your dentist.
Answered 7/16/2013
5.6k views
See dentist: Most effective long lasting whitening treatments are done with your dentist's supervision. Otc agents, toothpastes, rinses, etc, are only moderately effective. Talk to your dentist for the best advice.
Answered 9/2/2013
4.9k views
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