Implant Supported overdentures have been a common treatment for edentulous patients for the past 25 years and predictable achieve good clinical results. Many patients, especially those who are uncomfortable with dentures, enjoy the additional retention and support implants provide for their dentures. The implant-supported overdenture has been accepted as the standard of care for fully edentulous patients and should be the first choice of treatment for the edentulous mandible. Implant-supported overdentures offer many practical advantages over conventional complete dentures and removable partial dentures. These include decreased bone resorption; reduced or eliminated prosthesis movement; better esthetics; improved tooth position; better occlusion, including improved occlusal load direction, increased occlusal function and maintenance of the occlusal vertical dimension. Supported overdentures improve phonetics, the patient's psychological outlook and quality of life. Conventional dentures rely upon the residual alveolar ridge and mucosa for support and retention. Many patients have problems adapting to their complete dentures, especially to the mandibular prosthesis. The widespread use of denture adhesives is one indication that these prostheses generally provide inadequate comfort and function.