摘要: Vital tooth whitening, when administered correctly, is by all accounts one of the safest, most conservative, least expensive, and effective aesthetic procedures currently available to patients. This article traces evolution technology, describes what known about mechanism action explores such issues as toxicology side effects associated with whitening. The also various tooth-whitening systems, which include dentist-supervised night-guard bleaching, in-office or power bleaching over-the-counter products. Combination treatments light-activated are discussed. Finally, summarizes areas research needed in this field.