Edentulism commonly leads to resorption of the alveolar ridge, resulting in a significant decrease in the width of the supporting bone. This reduction compromises the stability and retention of dentures or dental implants. Preservation of bone width is crucial for successful prosthetic rehabilitation and surgical planning. Other anatomical factors such as tongue length, lip size, and palatal shape have less direct impact on the mechanical support required for prostheses. Therefore, maintaining or augmenting alveolar bone width is a primary surgical concern in managing edentulous patients.

Reference: Contemporary Implant Dentistry, Carl E. Misch, 3rd Edition.