# Computer-Aided Design (CAD) and Computer-Aided Manufacturing (CAM)-Based Fabrication of Andrews Bridge for Comprehensive Rehabilitation of Seibert Class III Ridge Defect: A Case Report

## TL;DR

A digital method for creating an Andrews bridge helps treat complex dental ridge defects with better aesthetics and function.

## Contribution

A fully digital CAD/CAM workflow for fabricating an Andrews bridge is presented for Seibert Class III ridge defects.

## Key findings

- Digital fabrication minimized laboratory errors and improved prosthesis adaptation.
- The Andrews bridge provided enhanced facial support and hygiene maintenance.
- The digital approach offers a predictable solution for complex ridge defects without implants.

## Abstract

Alveolar ridge defects, especially Seibert Class III with combined horizontal and vertical loss, pose challenges in achieving optimal esthetics, function, and hygiene. The Andrews bridge, a hybrid fixed-removable prosthesis, offers an effective solution by combining the stability of a fixed component with the hygiene accessibility of a removable one. With advancements in digital dentistry, computer-aided design and manufacturing (CAD/CAM) now enable precise, fully digital fabrication of such prostheses. This case report presents a completely digital workflow for designing and fabricating an Andrews bridge, ensuring superior fit, esthetics, and functional harmony. The digital approach minimized laboratory errors, enhanced adaptation, and simplified clinical procedures. The final prosthesis provided improved facial support, phonetics, and hygiene maintenance. A fully digital Andrews bridge offers a predictable, efficient, and patient-centered solution for managing complex ridge defects where surgical or implant options are limited.