Dentist Supervised Whitening Dentist-supervised tooth whitening involves the controlled use of carbamide or hydrogen peroxide, tailored to a particular patient. Dentists may administer in-office treatments or at-home treatments. Before the tooth whitening treatment, most dentists clean the teeth, fill any cavities, and make sure the patient’s gums are healthy. Most in-office systems use 15 to 35 percent hydrogen peroxide gels, sometimes coupled with a high intensity light to expedite the bleaching chemical reaction. (Some recent research has questioned … Read entire article »