In the past, the limitations of implant prosthetics were large, but with the continuous development of implant prosthetics, its superiority and its success in long-term clinical practice, the indications for implantation have been broadened. Implant dentures were mainly used for edentulous patients in the early days, and have been developed to the extent that any missing teeth can be implanted for restoration. Generally 4 months after tooth extraction, alveolar bone healing, then you can do implant restoration. It is suitable for those who have difficulties in denture retention due to various reasons, or those who cannot be restored by traditional methods due to functional disorders arising from the influence of psychological factors. At present, whether implant restoration can be carried out is mainly determined by the patient’s economic situation and the patient’s surgical indications, while other situations can be solved in various ways. 1.Insufficient bone in the alveolar bone can be solved by bone grafting. 2, The problem of maxillary sinus and mandibular canal can be implanted under the guidance of x-ray film and ct, and spiral ct can guide the direction more accurately. Choose appropriate implant length, and accurate implantation angle. 3.Immediate implantation after tooth extraction. 4.For patients with insufficient economic conditions, overdenture restoration can be used. 5.Deficiency of jawbone, facial tissues and organs can also be repaired by implantation. What problems should be noted in implant surgery 1. Implants should be kept parallel to each other as much as possible, avoiding labial and lingual side skewing as much as possible. During surgery, a direction indicator can be placed into the prepared implant socket as a directional sign post. 2, minimize tissue damage, especially to prevent thermal damage to bone tissue. Intraoperatively, large amounts of saline should be used to flush and cool down the temperature, do not make it more than 47 ℃. In the preparation of the implant nest, the use of a specially matched series of drills should be used to gradually expand the diameter of the hole, constantly lifting and inserting is conducive to cooling, and to remove bone debris. 3, to prevent damage to other structures, the operation should pay attention to the protection of the chin nerve, do not penetrate into the mandibular canal, maxillary sinus, nasal floor tissue. 4.After preparing the threads, the blood clots at the bottom of the implant socket should not be removed, and then rinsed with saline after the implant is implanted, and the time of rinsing is the time when the hole in the front part of the implant has been entered into the tissue, and the rinsing makes the upper part cooled down. 5, screwed into the covering bolt looseness and tightness should be appropriate, to prevent over-tightening is not conducive to the second stage of surgery, but to maintain the stability of the screw cap. 6, how to determine the direction of the implant socket perforation is a very important issue, which plays an important role in the future restoration results. Preoperative templates designed and produced according to the research model can more accurately qualify the direction of drilling holes in surgery.