Dental implants are a new technique of dental implants after the traditional removable movable and fixed dental implants, which has seven outstanding advantages compared with traditional dental implants: 1. The dental implant surgery is a small alveolar surgery, similar to tooth extraction, using local anesthesia, with little trauma, and can be eaten after surgery, almost painless. The general implant placement procedure can be completed in a few minutes to a few hours. Since the implants are made of biomaterials with excellent compatibility with the human body, they do not cause any adverse side effects to the human body. Even if the osseointegration of the implant fails, it can be removed and reimplanted by an improved method or replaced by a general denture. vii. It prevents bone attraction and preserves the alveolar bone. Because of these advantages, dental implants are also known as the “third set of human teeth”. After more than 40 years of development, dental implants have become a new technology that is mature, reliable and has a high success rate, and is widely accepted in the western developed countries. VIII. Longer use time. Statistically, the use of removable denture is only 40% after 4 years, 35% after 10 years, 44% of the abutment teeth are lost within 10 years, while the service life of fixed denture is 10-15 years, there is no risk of dental caries, endodontic disease and periapical disease, peri-implantitis is lower than periodontitis, and the long-term effect is higher than fixed denture and much higher than removable denture.