It refers to a method of tooth restoration that supports and retains the upper tooth prosthesis based on the underlying structure implanted in the bone tissue. It consists of two parts: the lower part of the dental implant and the upper part of the dental prosthesis, implant-supported. It uses artificial materials (such as metal, ceramic, etc.) to make an implant (generally similar to the shape of a tooth root), which is surgically implanted into the tissue (usually the upper and lower jaws) and supported by a strong retention of bone tissue, and the dental prosthesis that supports the upper part is connected by special devices and methods. Dental implants can achieve a restoration effect that is very similar to the function, structure and aesthetics of natural teeth, and has become the preferred restoration method for more and more edentulous patients.