Tooth whitening is the process by which the yellowish layer of teeth is removed to give pearly white teeth. The process lightens the natural color of the yellowish teeth without removing any of the tooth surfaces, thus giving a brighter tooth color. Of late, there are many varieties of products and procedures available that help improve the smile by whitening the teeth. Obviously, better looking teeth and a better smile improve the overall look.
Of the many types of tooth-whitening procedures available, the at-home bleaching kit is the most popular choice. Mouth trays, which are aids that are used in tooth whitening, are usually made in just one office visit. Some of these trays are worn for an hour, and others have to be through the night. Dentists charge anywhere between $100 and $600 for tooth-whitening services, and the prices of tooth-whitening kits vary from company to company.