Firstly, your dentist will assess and target the reason for the discolouration of your teeth, which can vary from food and drink, trauma, medications, smoking and age.
There are two ways to put the shine back in your smile:
Peroxide-containing whiteners can effectively whiten the tooth enamel. They typically come in a gel and are placed in a custom-made tray that fits on your teeth.
This procedure is called chair-side bleaching and usually requires only one office visit. Your dentist will apply either a protective gel to your gums or a rubber shield to protect your gums. Bleach is then applied to the teeth. A special light or laser might be used to enhance the action of the whitening agent.