If there is tooth looseness, different treatment schemes should be decided according to the degree and reason of tooth looseness: First, if it is caused by periodontitis, it depends on the degree of periodontitis. For moderate periodontitis, oral scaling, such as supragingival scaling and subgingival scaling, and long-term maintenance and health care of periodontal tissue should be carried out. Tooth loosening may be improved but not loosened. If it is severe periodontitis, bone grafting and gum plastic surgery may even be needed to improve tooth looseness. Second, if the tooth looseness is caused by periodontal abscess, the abscess should be removed, the inflammation should be removed, and anti-inflammatory drugs should be given, and the tooth looseness may be cured. Thirdly, if the tooth looseness is caused by periapical periodontitis, root canal treatment should be performed on the affected tooth to completely remove apical inflammation, and the tooth looseness may be cured.