It is the inner layer of the teeth called “dentin”, which is yellow and begins to show more as one ages and teeth are worn, while the white outer layer called “enamel”, slowly thins. In order to improve the effects of staining and darkening of the teeth, in-office whitening is an excellent option.
During teeth whitening or bleaching, a bio-friendly bleach is applied over the surfaces by your dentist in a clear plastic tray that fits over the teeth. A specialized light is then placed in front of the exposed teeth for an hour.
The bleach is activated by the light’s heat and bleaches the outer surfaces of enamel and dentine, making them up to six shades whiter than before!