to test the swiveling effect (7). Palpating the soft tissues covering the anterior surface of the right ramus, an incision is made starting from almost the base of the coronoid process and extending it downward for about 15 mm. The incision should run nearer to the buccal side of the ramus than the lingual side. The tissues are reflected exposing the anterior face of the ramus (8) . With a specially bayonet designed contra-angle and using a #700 XL fissure bur with a sufficient water spray, a thin groove is made just lingual to the buccal cortex. The groove should start superiorly above but dramatically buccal to the mandibular foramen, and should go downward so that its inferior portion still remains high in the ramus whenever possible (9). Since the depth of the groove is as deep as the blade portion of the ramus implant, if the groove is not made high enough on the ramus, even though it is quite buccal to the lingual surface of the ramus, where the nerve runs, it is possible that the inferior apical angle of the blade could injure the canal as it descends down the ramus (10). The ramus blade with its anterior extension arm is tapped into the groove so that the shoulders and neck of the blade are partially buried in the ramus. However, it is important at this time to tap it in so that the horizontal arm is tipping upward away from the occlusal plane (11). The anterior coping with its distal horizontal extension tube, is then placed into the horizontal extension arm of the ramus implant (12) . The anterior component gently slides in and out of the ramus extension arm so that the anterior coping extends over the corresponding rounded anterior blade posts (13). Carefully, the horizontal extension arm is gently tapped downward toward the plane of occlusion while the anterior component is continuously guided over the ramus extension arm until the anterior coping

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