Digital Rehabilitation of a Post-Mucormycosis Maxillectomy Defect Using a 3D-Printed Obturator with Objective Speech Analysis: A Case Report

Maxillectomy following mucormycosis results in severe functional and aesthetic impairments, including midfacial collapse, compromised speech, and impaired mastication, necessitating comprehensive prosthetic rehabilitation. This case report presents a fully digital workflow for rehabilitating a patient with a post-mucormycosis maxillectomy and sunken midface. Conventional impressions were digitised using a laboratory scanner to design and fabricate a definitive obturator and a three-dimensional (3D) printed maxillary denture. The integration of CAD/CAM technology and 3D printing enhanced precision, reduced processing time, and minimised manual errors. Objective speech analysis using PRAAT software was conducted before and after prosthesis delivery, demonstrating significant improvements in intensity and formant frequency alignment across key vowels, indicating restored articulatory efficiency and vocal resonance. In addition to aesthetics and masticatory improvements, the prosthesis contributed to better speech intelligibility and an overall enhancement in the patient's quality of life. This report highlights the effectiveness of digital prosthodontic techniques in delivering precise, efficient, and functionally optimised rehabilitation in maxillectomy patients, with measurable improvements in speech outcomes.