Dental polishing does not essentially whiten the teeth. The role of polishing is to remove foreign matter, plaque, pigmentation, etc. around the teeth and tooth crevices, to keep the surface of the teeth clean and shiny, so polishing is only for the care of the surface of the teeth, and can not essentially whiten the teeth. Dental polishing is suitable for people who have external pigment, plaque or fine calculus on the surface of the teeth after scaling, and it can also reduce the discomfort after cleaning. The surface of the teeth becomes smooth and even after polishing, and bacteria and food debris do not adhere easily. Polishing only visually feels like whiter teeth, but in reality it only removes plaque and pigmentation deposits and does not whiten the essence of the teeth. Currently, the more common methods of whitening teeth include urea peroxide bleaching, porcelain teeth and cold light whitening. If you have the need to whiten your teeth, it is recommended to go to a regular hospital stomatology department to consult and choose the appropriate teeth whitening method. You should also pay attention to oral hygiene, brush your teeth on time and rinse your mouth after meals to avoid the formation of new calculus.