With the improvement of people’s standard of living and the importance of oral health, people tend to be more and more interested in the restoration of missing teeth in terms of aesthetics, comfort and good restoration of function. With the development of dental implant technology, dental implants have gradually become the preferred method of restoring missing teeth. The main advantages of dental implants over previous restorative methods are as follows. 1. Better retention, more stable and secure than traditional dentures. 2, chewing function and its efficiency than the traditional dentures have improved substantially, the maximum degree of cool like real teeth. 3. Dental implants are more beautiful and comfortable because they do not have the abutment of traditional removable dentures, so they do not feel foreign body and have little impact on pronunciation. 4. Dental implants are an independent restorative unit, which causes less damage to the adjacent teeth and gum tissue and protects the remaining tissue to the greatest extent. 5. Dental implants are fixed units, which are easy to clean and do not need to be removed and cleaned daily, reducing the mental burden of the patient.