The swelling of the flesh next to the innermost big tooth is commonly caused by pericoronitis, periodontal abscess, periapical periodontitis, etc., mostly due to improper oral cleaning, local damage caused by brushing or flossing, or the presence of food residues in the gaps between teeth, forming plaque or tartar and other bacterial infections. In addition, it may also come from the development of periodontitis, pulpitis, etc. Common clinical treatment measures include the following: 1. General treatment: plaque, tartar and other substances can be removed by scaling, etc. If the tartar is too much or too deep, gum scraping can also be taken. At the same time, patients should keep their mouth clean and hygienic, take the correct and standardized way to brush their teeth. It is necessary to rinse the mouth after meals and to use dental floss to remove food debris in a timely manner. 2. Drug treatment: local rinsing with hydrogen peroxide solution and chlorhexidine can be used to help control inflammation. Antibiotics can also be applied to control inflammation and prevent infection, such as rinsing with chlorhexidine solution and taking anti-inflammatory drugs such as metronidazole and amoxicillin by mouth. For patients with more severe pain can also apply non-steroidal anti-inflammatory drugs, such as acetaminophen, ibuprofen, etc., can relieve pain; 3, surgical treatment: if the inflammation is serious, drug treatment is ineffective, and accompanied by unrelieved toothache symptoms, root canal treatment can be carried out; if an abscess is formed at the inflamed site, incision and drainage is required as soon as possible. For those who still have poor periodontal and gingival shape and fibrous hyperplasia after conservative treatment, resection and shaping can be chosen to restore the normal shape of gingiva and periodontium. For teeth with loss of function and no retention significance, surgical extraction of wisdom teeth can be considered.