For truly optimal smile-whitening results, look to your cosmetic dentist. Professional treatments-including custom trays made by a dentist for at-home use-penetrate deeper, and the results last longer than those seen with drugstore-bought counterparts.
Another reason professional treatments are superior to store-bought strips: the entire tooth is exposed to whitening gel, but strips whiten surfaces and not much else. Many strips only bleach the fronts of the teeth, but since teeth are translucent, it’s important to address both the front and back.
Still, over-the-counter strips can play a role in keeping your smile bright, touching up and prolonging the effects of in-office or custom-tray treatments.
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