Replacement of missing teeth with removable or fixed partial dentures is provided with the purpose of improving chewing ability and stabilizing the stomatognathic system. The dental profession and the public are more aware of the problems associated with a complete denture than any other dental prosthesis. The placement of implants enhances the support, retention, and stability of an overdenture. As a result, edentulous patients are very willing to accept a treatment plan for a implant overdenture. Overdentures have been shown to improve the quality of life for edentulous patients and contribute significantly to the patient's psychological well-being. The implant overdenture is an especially attractive treatment modality because of its relative simplicity, minimal invasiveness and economy. Compared with traditional methods of tooth replacement, the implant prosthesis offers increased longevity, improved function, bone preservation, and better psychologic results.