If the tooth is inflamed, the following treatments can be performed: i. If a large amount of calculus is attached to the cervical and root surfaces of the tooth, resulting in the proliferation of granulation tissue and swollen and painful gums, ultrasonic scaling and subgingival scraping can be performed, hydrogen peroxide solution can be applied to rinse the periodontal pockets, and tetracycline gel can be placed to promote anti-inflammation. Second, if the adjacent surface of the tooth is often embedded with food residue, resulting in gum swelling, the adjacent gap can be extended or inlays can be made to close the gap. If periapical inflammation or pulpitis occurs in the tooth, the pulp cavity can be ground open under local anesthesia to remove the pulp and complete the root canal treatment. If the x-ray shows severe atrophy of the alveolar bone, significant loosening of the tooth and recurrent infection, the tooth should be extracted after the inflammation subsides.