The classical treatment plan for the edentulous patient is the complete removable maxillary and mandibular denture. This treatment is relatively inexpensive in comparison with fixed implant-supported prostheses, but it has several drawbacks. Like all dental restorative procedures, a complete removable denture requires extensive attention to detail if an excellent clinical result is to be achieved. Depending on the shape of the regional ridge, the denture may be unstable or inadequately retained, leaving the patient dissatisfied with the functional result.