When the tooth bed is swollen and painful and you cannot open your mouth, prompt oral examination and full-mouth surface tomography should be performed. If the X-ray shows periodontal infection in the wisdom teeth on the inner side of the mouth, causing sore throat, it is necessary to rinse the periodontal pocket thoroughly with 3% hydrogen peroxide solution and apply cephalosporin and nitroimidazole antibiotics systemically for anti-inflammation. If a localized gum abscess forms, a rubber strip can be placed under local anesthesia after incision for drainage. If X-rays show acute periapical infection in the posterior teeth of the upper and lower jaws, the pulp cavity needs to be ground open, the inflammatory secretions formed in the apical region need to be drained, camphorated phenol cotton twists are placed for disinfection, and root canal treatment is completed after the inflammation is controlled. If alveolar abscesses occur around multiple posterior teeth, periodontal pockets need to be incised for drainage, and diseased bone and granulation tissue, etc., are removed from the periodontal pockets.