This procedure is called chairside bleaching
and usually requires only one office visit
. The 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.
Some people who use teeth whiteners may experience tooth sensitivity
. That happens when the peroxide
in the whitener gets through the enamel to the soft layer of dentin and irritates the nerve of your tooth. In most cases the sensitivity is temporary. You can delay treatment, then try again.
Overuse of whiteners can also damage the tooth enamel or gums, so be sure to follow directions and talk to your dentist.