Abstract: Objective: This case presents a treatment of complete denture restoration in a patient with edentulous maxilla and mandible accompanied by flabby ridge, aiming to provide a reference for the restorative treatment of patients with similar conditions. Diagnosis and treatment: A 59-year-old female patient with a complete denture for twelve years reported inadequate retention for two years. Surgical intervention involved flabby ridge in the anterior maxilla combined with vestibuloplasty to reshape the soft alveolar ridge. Three months postoperatively, a BPS (Biofunctional Prosthetic System) denture was fabricated. Necessary adjustments were done and the dentures were delivered to the patient. Results: A follow-up examination conducted one year after the BPS denture restoration and the BPS denture was stable and revealed a satisfactory restoration effect. Conclusions: For edentulous patients with flabby ridge, surgical intervention followed by the application of BPS dentures for restoring missing teeth can achieve a favorable treatment result.

Key words: complete dentures, flabby ridge, edentulous, biofunctional prosthetic system, injection molding method