All-on-Four is a new and innovative treatment concept for the supply of dental implants, in which only four implants are placed in the jaw. It promises toothless patients a quick, relatively inexpensive, and uncomplicated supply with dental implants and fixed dentures. The two rear implants are inserted into the jaw arch to withstand the best possible load, offset at a slight angle.
The traditional movable dentures can be obtained quickly; the dentures are not easy to fix, easy to shake, need time to learn to adjust the movable dentures, and cannot eat harder food. For patients with severe alveolar atrophy, movable dentures, the shaking makes it impossible for them to use this pair of dentures to chew food. For complete dental implants, at least ten or more artificial tooth roots must be implanted, as well as multiple bone replacement operations, the bones waiting to be filled grow, and the artificial tooth roots waiting to be implanted are osseointegrated. The entire treatment course often takes as long as one year. Above, if there are too many gums and bones due to defects, the postoperative appearance will be less than ideal. The long waiting time and multiple surgeries always make people who need full dental implants hesitate.