Options for tooth whitening
 Depending
on the bleaching treatment selected, some are performed in the
dental office using an in-office bleaching system such as laser
bleaching. These methods lighten teeth instantly. The same results
may be obtained through dentist-supervised at-home
bleaching, but take longer to achieve.
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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