Brighten up your smile! Teeth whitening, also known as bleaching, is a dental procedure used to lighten your teeth and remove stains and discoloration. Dental bleaching is one of the simplest ways to whiten your teeth. Coffee, tea, wine and certain medications can cause staining and discoloration of teeth. While surface stains can be removed with a simple cleaning, discoloration over a period of time can be removed with teeth whitening. There are two ways to achieve that white beautiful smile with bleaching, either through a one hour chair side procedure or with take home bleaching trays.