Design Y Mandible Onlays benefit patients who have skeleton mandibular deficiencies or surgically altered anatomy. Implant design provides the opportunity for augmentation of ramus height and ramus width. It also provides the opportunity to alter the inclination of the mandibular plane and restore continuity of the mandibular border. The registration tab allows for ideal and symmetric placement. Three sizes with left and right orientation allow the surgeon to meet the requirements of each patient.