Bleaching teeth is known to cause sensitivity. This happens since the “bleach” must
penetrate the outer layer of the tooth (enamel) before it bleaches the inner more
sensitive layer (dentin). If you are one of the millions of bleachers with custom trays
made by your dentist, you are in luck. The simplest way to decrease your sensitivity is
to place Sensodyne toothpaste into your custom trays and place them over your teeth.
The fluoride and potassium nitrate are wonderful desensitizers.
Wear your trays for at least 60 minutes a day for about a week, if your teeth are very
sensitive. If you are just sporadically bleaching, and your teeth are sensitive, then use
your tray for an hour before bleaching with the Sensodyne. Now bleach and then clean
the tray and place new Sensodyne for another 30 minutes to ensure your sensitivity is
controlled. You should feel relief, and be able to eat ice cream again!