It does not involve actual tooth "whitening," but rather a bleaching process, as the color of the tooth itself is not altered. The color of a tooth is determined by the shade of the tooth's core (dentin) and by the transparency and light refraction capacity of the enamel.
The color of the core is not altered; however, over time, the enamel becomes stained by tobacco, lipstick, coffee, tea, tomatoes, chemical pigments, cola drinks, the use of certain medications, etc.
Teeth whitening consists of chemically removing anything that alters the enamel's original color. The most suitable procedures for each patient should be chosen based on the diagnosis; this is why our dentist will advise you.