All-on-4® refers to the support of 'all' teeth by "X" amount of dental implants, a surgical and prosthodontic technique for total rehab.
About the service
The “All-On-4” treatment concept is a procedure for rehabilitating the edentulous (toothless) patient, or for patients with badly damaged teeth who no longer have the ability to function. More specifically, the procedure is a “fixed dental prostheses” replacing a full set of missing teeth in the upper and/or lower arch with a bridge or denture that permanently screws into a minimum of four dental implants.
Most edentulous patients only had the option of a traditional, removable complete denture. Nowadays there are more options that result in a stable, retained prosthesis that is no longer removable.