Teeth whiteners consist of a chemical called carbamine peroxide, which gets into the dental tubials in the enamel to eat away the stains and discoloration. Discover the chemical process of teeth whitening, which accounts for tooth sensitivity during bleaching, with tips from a licensed dental assistant in this free video on oral hygiene. Expert: Michelle McPhail Contact: www.MySolutionz.com Bio: Michelle McPhail has been a licensed dental assistant for seven years. Filmmaker: Christopher Rokosz