Patient's Satisfaction of Mandibular Implant Supported Overdentures With Reduced Denture Base Extensions.

Inclusion Criteria: * Age between 50 and 75 years. * Completely edentulous mandibular arch with adequate bone volume (≥10 mm in height and ≥ 6 mm in width at the implant site) and density to allow placement of 4 osseointegrated implants in the interforaminal region. * Good general health, with no history of systemic diseases that would contraindicate implant placement or the use of overdentures. * Presence of sufficient inter-arch space for overdenture construction and implant placement. * No history of severe bruxism or parafunctional habits that could affect implant stability or prosthetic outcomes. * Ability to understand and complete questionnaires regarding patient satisfaction and quality of life. * Willingness to comply with the study protocol and attending follow-up visits. Exclusion Criteria: * History of temporomandibular joint disorders. * Neurological disorders affecting masticatory function. * Presence of uncontrolled systemic diseases. * Cognitive impairments affecting the ability to provide informed consent. * Severe bone resorption or contraindications for implant placement (e.g., insufficient ridge height or width). * Presence of systemic diseases affecting oral health (e.g., uncontrolled diabetes, systemic inflammatory disorders). * Inability to wear dentures for extended periods or intolerance to the study protocol 7\. Inability to wear dentures for extended periods or intolerance to the study protocol