Your ideal whitening shade may not be apparent after just one in-office treatment. It may take several visits to reach your optimum shade. In-office whitening treatments typically only cover the front 6-10 teeth. You may need to use additional at-home whitening treatments to ensure that all your teeth keep the shade. Touch-up treatments (in-office or custom trays) can be done every 6-12 months.

You may have sensitive white spots on your gums immediately after your in-office whitening treatment. These are temporary and should disappear after 20-30 minutes.

Your teeth will continue to whiten for the next 84-72 hours after your treatment. During this time avoid things that could stain your teeth:
Coffee
Tea
Dark sodas
Red wine
Red sauces
Curry sauces
Soy sauce
Berries
Smoking (any kind)

Avoid de-sensitizing products that contain stannous fluoride (Gel-Kam, Omnil Gel, PerioMed, Plak Smackers, Gingi Med, and FluoriSHIELD) for about two weeks. These can cause dark stains on your teeth.