The restoration of tooth loss includes three ways, i.e. removable partial denture, fixed bridge restoration and implant denture, among which removable partial denture has certain advantages, its price is cheaper and there is not much wear on the neighboring teeth, but the disadvantage is that the stability is not as good as the other two restorations. The removable partial denture only relies on the mucosa or the retaining ring on the adjacent teeth, so it has some influence on the stability or the recovery of chewing power in the orthodontic area, so it is not recommended to do the restoration of the removable partial denture, and the restoration of the implant denture is recommended.