Whether a tooth can be extracted in case of inflammation is related to acute pulpitis, looseness and large swelling of the surrounding soft tissues, as follows: 1. If acute pulpitis occurs in a tooth with severe pain, the tooth can be extracted directly without spreading the infection because the inflammation is confined to the interior of the tooth tissue and no redness or swelling of the gums occurs. 2. If the tooth is obviously loose, the gap between the alveolar sockets is widened and there is a large amount of pus overflow, the affected tooth can be extracted under local anesthesia. If the soft tissues around the tooth are swollen and cause swelling and pain, the periodontal pocket can be rinsed with hydrogen peroxide solution and cephalosporin and nitroimidazole antibiotics can be applied systemically to control the inflammation before extracting the affected tooth to prevent bacteria from entering the bloodstream along the extraction wound and causing bacteraemia, etc.