Tooth loss is a common and frequent disease in the dental clinic, mostly seen in the elderly. According to the national survey report in 2004, in the age group of 65-74 years old, patients with missing teeth accounted for about 6.8%. China has already entered the elderly society in 2000 (10% of the population over 60 years old), and in 2005, the population over 60 years old has reached 145 million. With the increase of per capita life expectancy and the improvement of living standard, the number of elderly edentulous patients and the demand for treatment results will certainly increase. The traditional treatment of edentulism is based on the soft and hard tissue conditions in the patient’s mouth, using adsorption and soft tissue pressure to fix the denture in the mouth for initial aesthetic and chewing purposes. Due to the poor retention of the denture, the patient often suffers from pressure pain, weakness in eating, and sometimes the denture falls out. The development of oral implant prosthetic technology has significantly improved these conditions. This technology has no obvious restrictions on age. As long as the patient’s general condition allows, after a thorough examination by the doctor, a variable number of implants will be placed as support according to the patient’s intraoral conditions, and the restoration method can be chosen from movable, semi-fixed or even fixed restorations, which significantly improves the patient’s comfort and chewing efficiency, thus improving the quality of life. This will become a trend for people to pursue a high quality of life.