overextension – MySymptom

Overextension of Complete Dentures: Causes, Symptoms, and Management

1. Introduction Overextension of a complete denture occurs when the acrylic borders (flanges) of the prosthesis extend beyond the physiological and functional limits of the oral vestibule and supporting tissues. This mechanical discrepancy leads to chronic friction, tissue displacement, and impaired retention of the denture. The primary consequence is localized mucosal trauma, which manifests as … Read more

Overextension of Removable Partial Dentures: Clinical Implications and Correction

1. Introduction Overextension in a removable partial denture (RPD) occurs when the acrylic resin flanges or the metal framework of the prosthesis extends beyond the physiological boundaries of the mucogingival junction, muscle attachments, or functional vestibular depth. This mechanical discrepancy leads to chronic tissue impingement, localized inflammation, and instability of the denture. Unlike complete dentures, … Read more