AnswerBank Answer:
How does the whitening procedure at my dentist work?
First a dentist makes a mould of your teeth to ensure a custom-fitting tray. A bleaching agent is placed in a tray and the tray is fitted into your mouth. The bleaching agent penetrates the tooth enamel to lighten the appearance of your teeth.
There is a practical limit to how much teeth can be whitened. Rather than the enamel being brightened, in fact it is the yellowish layer of the tooth below the enamel, called the dentin, that actually influences how white teeth look.
Age is a factor as well, as the older we get, the thicker the dentin becomes.
Dentists can provide whitening in office and prescribe in-home treatments.
