Whitening is a cosmetic procedure that brightens and whitens teeth. Tooth whitening is a procedure that removes stains from teeth. At The Hamptons Dentist, our dentist will likely use a bleach-based whitening gel. This gel is inserted into the mouth, where it reacts to the stains on your teeth. The teeth, along with the gel, are removed from the mouth, and the process is repeated several times. Tooth whitening is a good option if your teeth are discolored, but the procedure may not be appropriate for people with unsealed or cracked teeth.