Depending on the depth and location of the fracture, the tooth can be treated by filling, root canal treatment or extraction. 1. Filling: If the fracture is located at the cusp and marginal ridge of the tooth, and does not reach the deep dentin layer, the crack needs to be abraded, and composite resin can be chosen to fill it. 2. Root canal treatment: Generally, when the tooth is damaged by bacterial erosion, which may rot to the pulp and cause pulpitis, root canal treatment can be carried out, and the tooth can be restored with a crown after root canal treatment. 3. Extraction: When the tooth loss is more serious and cannot be retained after the doctor’s evaluation, the affected tooth needs to be extracted, and the gap can be maintained after extraction, leaving it for fixed denture or implant denture restoration in the future. When a patient has a broken tooth, it is recommended to go to the hospital for examination and diagnosis in a timely manner, and under the guidance of the doctor for treatment.