First of all, it is important to clarify how old is the age at which half of the teeth appear to be lost. If you are an elderly person, you can have a denture restoration to restore the function of chewing. The former, also known as fixed prosthesis, relies on the cement or fixed device to be closely connected with the remaining natural teeth, and the foreign body feeling is relatively small; the latter is to use the natural teeth and the mucosa and bone tissue covered by the abutment as support, relying on the fixed body of the denture and the abutment fixation, using artificial teeth to restore, and using the abutment material to restore the defective alveolar ridge and soft tissue morphology, the patient is able to self Removal and wear. All should be treated by a professional dentist. In the case of children with tooth replacement, treatment can be left alone for the time being, but care should be taken to try to eat looser foods and semi-liquid, more easily digestible foods during that period. If these two ages are excluded and tooth loss occurs, the whole body should be checked for any other abnormalities, such as skin and hair, plus clinical examination and x-ray affecting techniques to clarify the cause and to clarify whether other diseases are causing it. If half of the teeth fall out or most of the teeth fall out, the impact on chewing function and aesthetics must be relatively large, and should be treated by a doctor in time.