Hi. Tooth whitening or bleaching treatments do not permanently whiten the teeth. The effect of this treatment usually lasts for 6-12 months after which a touch up is usually required. That means you may not have to undergo the whole tooth whitening procedure again but can get back the lost whiteness with at home treatment only. For more permanent solution to tooth whitening, ceramic dental veneers are the best option.
Answered2016-05-01 02:48:28
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