The evolution of treatments for edentulous ridges in Implantology is driven by the pursuit of suitable solutions aimed at improving patients' quality of life. Scholars have built on this premise to develop the All-on-Four technique, a gold-standard method for complete arch rehabilitation using only four implants to support a fixed prosthesis. This work explores the application of this technique in the mandible, examining the surgical procedures, clinical outcomes, and possible complications associated with the aforementioned technique.

This review discusses the theoretical principles and indications for the All-on-Four technique, emphasizing its suitability for patients with total tooth loss and atrophic bone structures. The technique involves maximizing bone utilization so that prosthetic rehabilitation adheres to the biomechanical principle of the “Roy's Polygon.”

The patient in question was carefully evaluated, considering her main complaint and clinical conditions. Therefore, this clinical case report details the surgical protocol, implant selection, planning, and execution of the procedure. The work presents the diagnostic criteria of three- dimensional images (computed tomography) for case planning, and the stages of the surgical procedure, from bone bed preparation to implant insertion and the fixation of a temporary prosthesis.