Photo by @Olesyaklyots on Twwenty20.com  ->What is tooth whitening? Tooth whitening, also called bleaching, is a process of lightening and removing stains from a tooth. This process bleaches the enamel and dentin, the principal mass of a tooth, and brightens the discolored teeth. -> What are the different methods of teeth whitening? Some of the teeth whitening options are over-the-counter whitening systems; dentist dispensed at-home products, laser tooth whitening method; Loaded Tray Teeth Whitening method, and in-office whitening methods. -> Are…