Your wedding is coming and you want your smile to be the brightest. Or maybe you have an important speech involved. Whatever the reason, tooth bleaching is not just about movie stars, it's more than just a day. Many people have lost their teeth, and perhaps millions more are considering the issue. The desire to have a brighter smile with whiter teeth is extremely strong, and the bleaching of teeth safely lightens the color of the teeth for up to five years. The most effective and safe method of tooth bleaching is the dentist's supervision.