Mandibular onlay composite grafts (autogenous iliac bone and titanium cylindrical threaded endosseous dental implants) were placed in seven patients with advanced bone resorption. All seven patients have experienced uncomplicated healing and continuous, uninterrupted prosthesis use without soft tissue or mechanical complications for 1 to 4 years. This preliminary report includes a discussion of the indications for the procedure, potential alternative management of the severely resorbed mandible, and details of the surgical procedure illustrated by two patients who received this treatment modality.