Stained teeth on the reverse side need to be treated with scaling at the dentist. Scaling is a supragingival scaling procedure, which involves the use of scaling instruments to remove tartar, plaque, and discoloration from the top of the gums. There are two types of scaling: manual scaling and ultrasonic scaling. Nowadays, ultrasonic cleaning is commonly used in clinical practice. The process of scaling is to rinse the mouth with a disinfectant solution, and then scaling through ultrasonic waves, the scaling process is usually a little sore, and then the teeth are further cleaned by special salt plus high-pressure water, and finally the teeth are polished to make them shiny and smooth, thus reducing the attachment of plaque and tartar. Note for the use of artificial pacemakers, suffering from malignant tumors of the gums, various bleeding disorders of patients and pregnant women should not be scaling, scaling should not be used two weeks after the use of hot, cold, sour and sweet foods. It is recommended to go to the regular hospital stomatology department for treatment.