If the tooth pain is caused by pulpitis and periapical inflammation, the tooth should be treated with root canal therapy. Effective root canal therapy can remove the infected material and inflammation in the pulp cavity and periapical area, and after the inflammation is eliminated, the root canal should be filled tightly and permanently to isolate the external stimulation and eliminate the infection again. 2. If the tooth is a tooth with a defect and the defect is large and cannot be retained, it is recommended to extract it under local anesthesia. 3. If the toothache is caused by periodontitis or periodontal abscess, periodontal basic treatment can be performed first, and if the looseness is large and cannot be retained, the loose tooth should also be extracted under local anesthesia.