Introduction: The need to rehabilitate fully edentulous patients is expected to increase significantly globally in the future.

Objective: To carry out a review of the literature published in high-impact journals about the "All on four” technique, the most common complications when performing this technique, the difference between analog and digital flow, the materials from which implant-supported prostheses can be made and the postoperative satisfaction of patients.

Methodology: A search was conducted in the Pubmed, EBSCO and Google Scholar databases. The terms "All on four", "Fixed prostheses", "Removable prostheses" and "implant-supported full dentures" were used in an advanced search.

Results: Complications can be divided into early and late, prosthetically the ones that we can avoid with good planning are the late ones. Patient satisfaction is usually high with implant-supported prostheses, although a structured maintenance program must be in place for the long-term success of the implants. The digital flow streamlines the protocol and presents a wide variety of materials for rehabilitation.

Conclusions: The digital flow represents a valid treatment alternative for the rehabilitation of edentulous arches with implant-supported prosthesis, the risks and complications must be considered prior to case planning to obtain a better treatment result and patient satisfaction. There are many material options for prostheses, both metal, ceramic and materials for milling in the digital flow; the choice of material will depend on the case and the oral conditions of the patient.