Tooth whitening or bleaching is a cosmetic process intend to improve the color of the teeth to a more pleasant, youthful and lighter shade. The process can be done with a tray system (carrying dental bleaching gel) for home treatment, or as an in-office procedure with an energy source (cool laser light or other plasma light) which activates the dental bleaching agent which is applied to the tooth surface. This accelerates the bleaching process and achieves an instant whitening result.

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