Options for tooth whitening
 Teeth
whitening results may be obtained through dentist-supervised at-home
bleaching.
Some bleaching systems, which bleach
your teeth while you sleep, work in 10 to 14 days (or more
accurately nights)! Others bleach your teeth from two to four hours
a day requiring three to six weeks to complete.
Also it's important to know that
certain types of stain respond better to different types of
whitening
materials. In such cases, your
dentist may recommend one method over the
other.
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