THE EFFECTIVENESS OF THE “ALL-ON-FOUR” TECHNIQUE IN THE REHABILITATION OF ATROPHIC MAXILLAE: A LITERATURE REVIEW

Abstract

This article sought to analyze the effectiveness of the All-on-Four technique in the rehabilitation of patients with atrophic jaws, highlighting its clinical, functional, and prosthetic outcomes. An integrative literature review was conducted in the MEDLINE/PubMed database, focusing on publications from 2021 to 2026, resulting in the selection and analysis of 22 articles. The results demonstrated high survival rates for implants and prostheses, as well as the effective restoration of masticatory function, aesthetics, and quality of life. It was evident that the combination of digital planning and guided surgery with the use of angled implants or hybrid techniques—including zygomatic, transnasal, and pterygoid implants—optimizes the use of remaining bone and reduces the need for complex bone grafts. However, complications such as peri-implantitis and mechanical failures underscore the importance of continuous periodontal maintenance and occlusal control. It is concluded that the All-on-Four protocol is a highly effective, predictable, and safe alternative for the treatment of atrophic jaws, provided that it is based on rigorous planning and careful patient selection.