Yes. Regular brushing removes bacteria, plaque, and food particles from your mouth, helping to prevent things like tartar buildup, cavities, infection, and bad breath. Teeth whitening is a purely cosmetic procedure; it doesn’t clean your teeth, prevent cavities or decay, or restore the strength and integrity of your teeth. Cavities can still develop and build-up along the gums can still progress into gingivitis and gum disease, so it’s just as important to maintain a good oral health routine–including regular visits to your dentist for cleanings and checkups–after your teeth whitening. It may be even more important, since good oral hygiene can also help preserve and prolong the results of your teeth whitening treatment.