Whether there is an age limit for dental implants is a particular concern for patients with missing teeth, especially for elderly patients. Generally speaking, there is no age restriction on dental implants, and dental implants can be placed in elderly people. Cases of successful implantation of dentures in 80-year-old people have been reported in China and abroad. However, it is a prerequisite that chronic diseases common to the elderly such as diabetes, hypertension, heart disease and cerebrovascular disease are well controlled, and that there is no inflammation or mucosal disease in the mouth. Compared to young people, elderly people have more serious alveolar bone atrophy due to wearing dentures for years or suffering from periodontal disease for a long time, which can make implantation difficult. Young patients with missing teeth have a strong metabolic capacity and high bone density, so the alveolar bone heals quickly and with high quality after tooth extraction, and the success rate of dental implants is relatively high. The bone quality of the elderly is relatively lax and the alveolar bone resorption is obvious, but this does not mean that the elderly cannot have dental implants. In fact, a significant number of elderly patients with missing teeth are suitable for dental implant restoration. For patients with poor alveolar bone, bone grafting can be done before the dental implant surgery to increase the height and width of the alveolar bone, and the alveolar bone can fully meet the requirements of dental implants after the surgery. Elderly people who are in general health condition or suffering from certain diseases that are well controlled can undergo dental implant surgery and complete dental implant restoration as long as they can afford to have their teeth extracted.