People have desired whiter and cleaner teeth throughout history. Current technology is designed to remove extrinsic and/or intrinsic stains depending on the specifics of the formulation and technique. Intrinsic staining is removed using carbamide peroxide or hydrogen peroxide. Tooth whitening can be achieved in-office or using a take-home or over-the-counter product. Tooth whitening gel utilizing aqueous cleaning technology, used as a pre-treatment, has demonstrated the ability to reduce the treatment time and as a pre-treatment and whitener to reduce sensitivity experienced during tooth whitening.
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