Implant-Supported Prosthetic Rehabilitation of the Edentulous Maxilla Using the OT Bridge Equator System: A Case Report

Edentulism of the maxilla presents significant clinical and functional challenges due to limited bone quality, anatomical constraints, and inadequate retention commonly associated with conventional dentures. Low-profile abutment systems, such as OT Equator and OT Bridge, enable the fabrication of fixed full-arch prostheses with improved mechanical stability and simplified maintenance. A 60-year-old male patient with terminal-stage periodontitis in the maxilla underwent full-arch implant-supported rehabilitation. After the extraction of compromised teeth, six implants were placed in strategic positions and allowed to heal. Upon radiographic confirmation of osseointegration, OT Equator abutments were selected based on soft-tissue height and installed according to the manufacturer’s recommendations. A twophase open-tray impression was taken, followed by fabrication of a Co-Cr framework and a zirconia-based definitive prosthesis. The prosthesis was retained using the OT Bridge system, combining elastic primary retention via Seeger rings with secondary screw retention. Standard and angulated extragrade abutments were used to compensate for implant divergence and ensure passive fit. The patient reported excellent aesthetic and functional satisfaction using the OT Bridge Equator System. Follow-up examinations showed stable soft-tissue healing, absence of inflammation, and no mechanical complications. The applied system provided predictable retention, favorable stress distribution, and facilitated oral hygiene. This case demonstrates that the OT Equator and OT Bridge systems offer a reliable solution for full-arch fixed rehabilitation of the edentulous maxilla. Their low-profile design, divergence compensation, and dual-retention mechanism support predictable outcomes and represent a valuable alternative to traditional multi-unit abutments in anatomically demanding cases.