Oral rehabilitation in an atrophic maxilla using the all-on-four technique: A clinical case report

Abstract

Oral rehabilitation of patients with extensive tooth loss associated with maxillary bone resorption represents a frequent challenge in implant dentistry. In this context, the All-on-Four protocol has emerged as an effective therapeutic alternative, allowing the placement of a fixed full-arch prosthesis supported by four strategically positioned implants without the need for complex reconstructive procedures. This study aims to report a clinical case of oral rehabilitation in a patient with previously compromised implants in the anterior maxilla treated using the All-on-Four technique. This is a descriptive case report involving a 54-year-old female patient treated at a postgraduate implant dentistry clinic in Manaus, Brazil. After clinical and radiographic evaluation, failed implants and teeth with poor prognosis were removed, followed by preparation of the bone bed and placement of four implants according to the proposed protocol. The approach allowed better use of the remaining bone and restoration of the biological conditions of the region. The initial surgical results demonstrated adequate implant stability and satisfactory healing of the peri-implant tissues. It can be concluded that the All-on-Four protocol represents a safe and predictable alternative for the rehabilitation of atrophic maxillae, contributing to the restoration of masticatory function and oral aesthetics.