This study is aimed to compare the wear of nylon caps and patient satisfaction in two-implant overdentures with metal bar and Peek bar overlays in the premolar area: This prospective clinical trial will involve 14 edentulous patients who will receive two implants in the premolar area. Patients will be randomly assigned to two groups: Group A will receive metal bar overlays, and Group B will receive Peek bar overlays. The patients will be evaluated at baseline,one month ,6 month and 12 month The following parameters will be evaluated: 1. Wear of nylon cap: The wear of the nylon cap will be evaluated using a digital microscope at each follow-up visit. 2. Patient satisfaction: Patients will be asked to rate their satisfaction with the overdentureResults: Metal group showed significantly higher roughness and volumetric changes than PEEK regarding baseline, after 3 months, after 6 months, and after 9 months. and there was insignificant difference between them after 12 months as P=0.11.Patient satisfaction scores were significantly higher in the PEEK group, particularly in retention, stability, comfort, and speech domains at both six months and one year (p = 0.04). on a visual analogue scale (VAS) at each follow-up visit.
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Timeframe: base line ,3,6 and12 month