by Jared Kells
Cleaning the teeth twice a day can help to keep them relatively free of staining, but professional teeth whitening methods can produce amazing results in a very short period of time. These are generally available under the supervision of a dentist and this method of tooth whitening is gaining in popularity because of its success.
Enamel, which is the first layer on the tooth's surface, is partially translucent. The layer which lies beneath the enamel, normally referred to as dentine, is usually yellow, but could be brown, gray, or black. This is the color that can be seen...
