The treatment measures after tooth loss, need to be divided into circumstances, as follows: 1, the loss of milk teeth: due to the eruption of permanent teeth, pressure on the roots of milk teeth, resulting in the absorption of the roots of milk teeth, and then fall out, this is a normal phenomenon, do not have to worry too much; 2, the teeth were traumatized resulting in the loss of the teeth: this case, if the teeth are completely dislocated out of the general have to be reset instantly. If the tooth falls to the ground and has been contaminated, it should be rinsed with saline or sterile water, and it is best to reset it immediately. If immediate repositioning is not possible, the dislodged tooth can be placed under the tongue or held in the mouth and then taken to the hospital as soon as possible, or it can be placed in a cup with milk, saline or tap water and then taken to the hospital. Pay special attention to one point, do not dry storage, because dry storage will affect the periodontal membrane and pulp cell activity, leading to late root resorption; 3, periodontal disease caused by tooth loss: periodontal disease caused by tooth loss, the patient should go to the hospital as soon as possible to check the severity of periodontal disease, if it has been detached, to look at the late recovery of alveolar bone, and then according to the alveolar bone condition of the later restoration of the treatment.