How many days does it take to whiten teeth

Whitening may begin to change tooth color during treatment, while the final shade develops after the planned course and sensitivity settles.

Timing depends on office treatment or dentist-provided trays, starting shade, peroxide formula, and discoloration cause.

Have the dentist check for cavities, gum inflammation, enamel defects, and restorations before whitening.

Delay whitening for untreated pain, bleeding gums, a cracked tooth, or a single dark tooth.

Ask which method is planned, what shade change is realistic, and whether restorations will match.