Teeth whitening is a procedure in which teeth are bleached and lightened. All throughout a person’s life they are at risk of yellowing of the teeth due to a type of bacteria called Streptococcus mutans residing in the mouth. This bacteria is the most common cause of tooth discoloration. There are two methods of teeth whitening: professional whitening, and at-home whitening. Professional whitening requires a dentist or a dental hygienist to administer the whitening treatments. They will use a whitening product of their choice, and will use multiple techniques to whiten your teeth. There are multiple ways in which to whiten teeth at home, by using whitening strips, toothpaste, mouth wash, and more.