The dental implant procedure is usually divided into two successive surgeries for the placement of dental implants and their superstructures, and finally for the completion of the implant prosthesis. The specific treatment procedures are as follows: 1. Patients who are suitable for dental implants after examination by a specialized doctor should sign an informed consent for the surgery. 2. The first stage of surgery: implant will be implanted into the alveolar bone of the missing teeth. The sutures will be removed in 7~10 days after surgery. 3. Phase II surgery: The healing abutment will be installed 3~4 months after the phase I surgery, and the mold will be taken in 14~30 days to fabricate the upper restorative denture. The exact timing of the second stage surgery needs to be evaluated according to the patient’s own bone condition and the osseointegration of the implants after the first stage surgery. 4. Implant denture restoration, usually using all-ceramic crowns for restoration. 5. Follow-up: After implant denture restoration, it is necessary to review every 3 months in the first year and at least twice a year thereafter.