Dental implant technology-related scientific knowledge: 1, the implantation process is not significantly painful, the surgery time is not long, generally an average of 10-30 minutes per tooth; 2, the surgery is not very traumatic, similar to tooth extraction; 3, the implantation technology is mature, is the preferred method of restoring missing teeth in developed countries; 4, to have the necessary preoperative examination and good operating room conditions; 5, the correct preoperative design is very critical, is the basis of successful implantation. Compared with porcelain teeth, the advantages of dental implants: 1, porcelain teeth need to grind the cover to destroy the adjacent healthy teeth as a fixed abutment, that is, the lack of a tooth to do three teeth, while dental implants do not destroy the adjacent teeth, the lack of a planting; 2, porcelain dental crowns are cast products, relatively rough, while the implant components are finely processed preformed products, the structure of precision, therefore reducing the bacterial breeding and infection opportunities; 3, some cases (such as neighboring teeth 3, some cases (such as unhealthy or no teeth behind, etc.) forced porcelain dental restoration is very dangerous, endless consequences, and implant restoration is not related to the condition of adjacent teeth; 4, the elderly full mouth without teeth, can not porcelain restoration, individuals with poor alveolar bone conditions, denture loosening, very painful, can improve the effect of implant technology; 5, porcelain tooth neck caries is difficult to avoid, and dental implants absolutely no such phenomenon may occur; 6. Porcelain tooth restoration, because of the lack of root stress stimulation, the missing tooth area bone gradually atrophy absorption collapse, resulting in an old face, while dental implant restoration is more natural, close to natural teeth, because the artificial root stress stimulation, to avoid the shrinkage of alveolar bone absorption.