Teeth pigmentation can be improved by sonic cleaning, teeth polishing, cold light whitening and other ways to improve the symptoms. 1. Sonic scaling: clinically known as scaling, also known as supragingival scaling. For the gums have dental calculus, plaque, pigmentation, etc., mainly the use of high-frequency or high vibration mode, and then through the ultrasonic will be dental calculus and plaque and some residual material broken, and then clean the teeth, in order to achieve the purpose of cleaning teeth. 2. Teeth polishing: generally carried out after the teeth cleaning, mainly through the way of polishing, the teeth surface of some residual calculus or pigment clean, but also can make the teeth back to smooth. 3. Cold light whitening: belongs to a kind of medical whitening method, can clean up the pigmentation on the teeth, also can make the teeth back to white, mainly using hydrogen oxide composition of the whitening agent to achieve the therapeutic purpose. When choosing the above ways to deal with pigmentation on teeth, you need to change some bad habits, such as smoking, chewing betel nut, etc. These factors may lead to darkening of teeth, which will easily affect the treatment effect. If there is any doubt, it is recommended to consult a professional physician in time.