In most cases, the natural color of the teeth varies from greyish to yellow. Teeth naturally darken with age, and the use of tobacco products as well as the consumption of certain foods or drinks can affect their appearance by causing stains on their surface.
In addition, the perception of the color of the teeth is strongly affected by the color of the skin and the makeup.
Regardless of the actual color of their teeth, people with darker skin or dark makeup will look as if they have whiter teeth.
Although teeth are not naturally made to be completely white, many Canadians want a brighter smile. To meet this desire, a wide range of bleaching products has been made available to consumers.
Most whitening products are made from peroxide and can change the color of the tooth itself. However, whitening-based treatments are not effective for all dental discolorations.