Patient Satisfaction and Oral Health-Related Quality of Life of Quadrilateral Versus Bilateral Linear Bar Designs for Four Implant Implant-Assisted Complete Mandibular Overdenture Regarding Peri-Implant Crestal Bone Loss

A long cone paralleling approach with a specially made film holder will be used to assess each patient's vertical marginal bone loss to ensure standardized radiography analysis and avoid any magnification errors. The linear distance between the proximal crestal bone level and the implant shoulder will be measured at the mesial and distal aspects of the implant measured in millimeters (mm). Measurements will performed using image measurement software patient satisfaction comparison between 2 groups