The loosening of the tooth next to the extracted tooth may be caused by the impact of the instrument on the neighboring tooth or the use of the neighboring tooth as a pivot point during the extraction, and the treatment method is to reset and fix the tooth and to perform root canal treatment as appropriate, as described below. When extracting a tooth, the extraction forceps or tines may be dislocated due to improper handling and impact the neighboring tooth, or the neighboring tooth may be used as a fulcrum when using the tines, which may lead to loosening of the neighboring tooth. The neighboring tooth should be restored to its original position and then fixed with a periodontal splint. Periodic checkups should be conducted, and root canal treatment should be carried out in a timely manner if there are signs of inflammation or necrosis in the pulp. There may be other reasons for the loosening of the tooth next to the extracted tooth, so it is recommended to go to the hospital in time to receive regular treatment as soon as possible.