Those who meet the indications for immediate implantation after extraction of ambulatory teeth can be directly implanted, including sufficient bone volume, healthy surrounding tissues, etc. Those who do not meet the indications for immediate implantation can choose other restorative methods, as follows. 1. The indications for immediate implantation include no acute periapical disease or periodontal disease at the implant site, the presence of periapical granuloma in the affected tooth but its scope is limited, and there is at least 3-5mm of bone in the root side of the alveolar fossa in order to ensure the stability of the implant at the initial stage. 2. If the above indications are not met, implant denture restoration, fixed partial denture restoration or removable partial denture restoration can be performed after the alveolar fossa is completely healed. For the same disease, different patients have different conditions and different treatment options, so it is recommended to go to the hospital and choose the appropriate restorative method.