Periodontal disease is a microbial infectious disease and is the most important cause of tooth loss in adults in China. It is not only harmful to oral health, but also closely related to systemic diseases, such as: cardiovascular diseases, diabetes, pregnancy complications, respiratory infections, rheumatoid arthritis and other diseases, so the prevention and treatment of periodontal disease is crucial. In the past, people still have many misunderstandings about dental cleaning, thinking that only people with unsightly teeth should have their teeth cleaned, and completely include dental cleaning in the cosmetic category. In recent years, due to the popularization of oral health care knowledge, people gradually began to get out of this misunderstanding. Statistical results show that if each person can seriously and thoroughly clean and scrape 1-2 times a year, the possibility of periodontal disease occurrence and development will be reduced by 80%, and the possibility of keeping the oral cavity relatively healthy for life and avoiding tooth extraction and veneers will be increased by 80%. Scaling is one of the most basic means of periodontal disease treatment. Therefore, whenever there are clinical symptoms of periodontal disease, such as bleeding gums, red and swollen gums, itching and swelling, periodontal pus, periodontal abscess, large gaps, elongated roots, loose teeth, displacement or spontaneous tooth loss, etc., you need to come to the periodontal department for scaling and other related periodontal treatment. Since the treatment of periodontal disease emphasizes prevention, early detection and early treatment, even if you do not have the above symptoms, it is recommended that you have regular oral checkups to maintain your oral health. The main purpose of scaling is to remove supragingival plaque and tartar to control or eliminate periodontal inflammation, or to lay the foundation for subsequent periodontal treatment. Because plaque is constantly forming and because plaque is not easily removed from certain areas of the teeth, only a very small percentage of patients with periodontal disease are able to achieve effective plaque removal through self-administered oral hygiene cleaning, making it necessary for the vast majority of patients to receive regular periodontal maintenance treatment and adhere to it for life. Patients with gingivitis need to have dental cleanings every 6 months to 1 year to prevent the occurrence of periodontitis, while patients with periodontitis need preventive dental cleanings and other treatments every 3 months, 6 months or 1 year, depending on the situation. It is important to note that since bleeding occurs during the cleaning process, coagulation disorders must be ruled out prior to the cleaning process, and patients should choose to visit a regular dental hospital to avoid cross-infection.