At present, there is no authoritative literature to clarify the best way to restore four missing teeth or multiple teeth, according to the missing teeth, the patient’s own situation to choose the appropriate restoration, such as missing four teeth scattered, can choose fixed partial denture repair or implant denture repair; such as four teeth missing continuously, can choose implant denture repair. 1. Four missing teeth scattered: the natural teeth on both sides of the missing gap can be used as abutments to provide retention and support, and a fixed partial denture can be fabricated to restore the missing teeth. Or choose implant denture, so as not to damage the healthy teeth on both sides. 2. Four consecutive missing teeth: Implants and abutments can be utilized to provide retention and support for the superstructure, generally 2~3 implants are required, and artificial crowns are utilized to restore the missing teeth. The same disease, the patient’s situation is different, the choice of treatment is different, it is recommended to visit the hospital for targeted treatment.