Oral tooth loss, defect repair according to the specific circumstances of the patient to decide, mainly the following: 1, tooth loss: commonly known as lost a few teeth, the need for dental implants, this restoration method is generally fixed repair and active repair two, the number of tooth loss is small, usually choose a fixed bridge repair, is usually said porcelain dental bridge repair; if the number of defects, and want to fix the repair, you need to do dental implant repair; there are A restoration method is activity repair, activity removable partial denture repair indications are relatively wide, the cost is cheaper, so more patients accept; 2, dental defect repair: is the individual teeth on the need to repair the defect, this repair is generally divided into crown repair, inlay repair and pile crown repair; 3, missing teeth repair: missing teeth refers to the upper half of the mouth, the lower half of the mouth or the whole mouth a tooth is not, need to do Total denture restoration, also belongs to the movable denture, removable denture. Implant denture can repair the missing teeth, but also can repair the missing teeth.