Would you like to have a brighter smile? Have you thought about professional, in-office teeth whitening or teeth bleaching? It is the one of the most popular dental procedures in the world today, and a quick and easy way to brighten teeth and upgrade your smile. Tooth discoloration is common as tooth enamel changes color and becomes stained by foods and beverages over time. In just about an hour, your dentist or dental hygienist can make your teeth 5–7 shades lighter.