If the filling wobbles, an oral examination can be performed and x-rays can be taken. If the filling produces micro-leakage with the edge of the cavity, or if fracture occurs, the filling can be ground out, and after removing the decaying matter at the bottom of the cavity, the filling can be filled with composite resin or silver amalgam, etc., and if necessary, an inlay restoration can be made. If the x-ray shows that the tooth has chronic periapical inflammation and the root produces a large amount of secretion, the pulp cavity can be ground open and the infected pulp can be removed to complete the root canal treatment. After the inflammation subsides, the roots gradually regain stability. If the X-rays show heavy resorption of the alveolar bone around the root and the tooth is loose more than 2-3 degrees, it can be extracted and restored with an immediate implant. If the tooth splits and loosens, it should also be extracted and then restored.