Treatment of periodontal disease is formulated according to different degrees. Sequential treatment of periodontal disease includes: scaling (also called scaling, removing local undesirable irritants, removing calculus and plaque), subgingival scaling (removing subgingival calculus in periodontal pockets), periodontal surgery (gingival flap surgery is feasible for more severe periodontitis, gingival excision for excessive gingival hyperplasia), and fixation of loose teeth. Regular oral examination and treatment is necessary to establish good oral hygiene and health care. 1.The purpose of scaling is: to remove dental calculus. 2.The steps of scaling are: rinsing, disinfection, ultrasonic scaler scaling, polishing, rinsing, and applying medicine. Generally, people think that scaling will lead to an increase in the gap between teeth, tooth allergy and damage to the teeth. In fact, formal scaling is done by ultrasonic high-frequency oscillation to remove calculus and calcified dirt from the tooth surface. Feeling less comfortable after scaling is due to the fact that one has not been accustomed to scaling for many years and is not well adapted to it. If people do clean their teeth twice a year, periodontal disease will basically not come back to bother them.