All-on-4® procedures have revolutionized the restoration of severely compromised and/or hopeless dentition. This procedure is named for the fact that all teeth in the arch are supported by four dental implants. Typically, two anterior implants are placed in a straight position and two posterior implants are placed in a tilted position. It is a technique used for patients who are completely edentulous or have a severely compromised dentition. The restoration is fixed in place with screws, as opposed to snap on removable overdentures which utilize semi-precision attachments.
