Abstract
This article describes a multidisciplinary approach combining surgical and prosthodontic treatment of a completely edentulous patient who presented with a severe skeletal class III relationship and was diagnosed as American College of Prosthodontists Prosthodontic Diagnostic Index (ACP PDI) class IV. The use of a complete denture serving as diagnostic tool, surgical guide, and definitive restoration is presented. Computer-aided surgical simulation was used to achieve an accurate diagnostic and surgical plan. Maxillary Lefort class I and mandibular sagittal split osteotomy surgical treatment was performed to correct arch discrepancy. The surgical procedure demonstrated a clinically acceptable maxillomandibular relationship and stability. The patient was satisfied with the esthetics and demonstrated improved oral function following prosthesis insertion.