Dental implant technology is a new program developed in recent years in oral medicine. The dental implant mentioned here is not really planting one or several teeth like natural teeth, but is a “denture” restoration method in which the implant material is embedded into the alveolar bone (implant), and then a denture is made on it. For patients who cannot have regular dental implants for certain reasons, this method brings them hope of restoring the chewing function of their teeth. Dental implants have strict indications, not any conditions can do dental implants, must be diagnosed by a doctor before proceeding, depending on the location of the missing teeth, alveolar bone, physical health conditions. People missing teeth have been expecting dentures to function like real teeth, but the scope of application of fixed denture is more restricted by objective conditions, and removable denture is difficult to satisfy patients because it can’t fully restore the efficiency of mastication, affect the pronunciation and have a sense of foreign body. Since the 30s, with the development of dentistry and biomedical engineering and mutual penetration, the implant denture in the field of dentistry has been established. Especially in the last decade, implant dentures have been widely used in clinical practice and achieved good results, gradually becoming a form of restoration that patients and dentists are happy to adopt. The implant denture consists of an implant located in the jawbone and an open portion of the implant that penetrates and is exposed to the gums. The implant is the unique structure of the implant denture, acting as an artificial root and an artificial attachment, while the latter is the abutment, the abutment and the artificial denture part attached to it, which plays a functional and connecting role. The portion of the implant that passes through the mucosa of the alveolar ridge is called the implant neck, and the portion above the implant neck is called the superstructure. Some systems where implants are placed as a secondary procedure have a discrete implant base between the implant and the superstructure, and the implant neck is located in the middle of the implant base. Implant prostheses are capable of greater chewing efficiency with a smaller or even no abutment area, but still have good retention and stability. For cases where the alveolar ridge is significantly resorbed and it is difficult to succeed with traditional denture, implant denture has its remarkable superiority. Dental implant is the same as planting crops, implant nails are surgically implanted into the jawbone, and after 3 to 6 months the implant is firmly combined with the jawbone, and the denture is attached to the upper end of the implant to become a dental implant. Implant surgery is performed 3-6 months after tooth extraction, and an artificial implant (artificial tooth root) is inserted. Restorations (porcelain teeth, etc.) are placed on the artificial root 6 months after the surgery. When patients wearing implant dentures exercise chewing functions, the dentition force is transmitted directly to the jawbone or jawbone through the implant, and the force is quickly transmitted and dispersed to the larger supporting bone, thus being able to withstand larger dentition forces and provide good support. The implant denture is fixed to the upper denture by the retention device on the abutment, which has a good retention and stabilization effect. The implant denture has a small or no abutment, which makes the patient feel comfortable. The implant denture has a small or no abutment, which makes the patient feel comfortable. Attachment: Indications for dental implants: 1. Sufficient alveolar bone (including height and width) in the missing teeth area of the mouth. 2. 2.No serious periodontitis or periodontal disease. 3.The gap between upper and lower teeth should not be less than 0.5 centimeters during occlusion. 4.Patients without diabetes, kidney disease, heart disease and coagulation disorders. Precautions: regular review after implant surgery, while maintaining oral hygiene, do not chew too hard food.