Teeth whitening treatment: whiteners are much stronger than whitening toothpastes and home-use whiteners, since they have more peroxide. They can change the color of your teeth faster than the other methods.
The in-office whitening is usually done in about one hour. To help protect the mouth from the peroxide, the patient’s gum tissues are covered either with a thin sheet of rubber or a protective gel. Sometimes a light or laser is used with the peroxide.