In cases of distal extension removable partial dentures (RPDs), traditional impression methods often fall short in capturing the functional form of the residual ridge. The altered cast technique, also referred to as the corrected cast technique, addresses this limitation by enhancing the adaptation of the denture base to the mucosal tissues and ensuring a more even distribution of forces between the teeth and supporting soft tissues. This approach is especially advantageous in Kennedy Class I and Class II arches.

A 60-year-old male patient presented with the chief complaint of missing teeth. Intraoral examination revealed a completely edentulous maxilla and the absence of teeth in regions 36, 37, 45, 46, and 47. Based on clinical findings, a treatment plan was formulated to rehabilitate the patient using a removable partial denture incorporating a functional impression and the altered cast technique to optimize support and stability.