<prompt> Angulation of bone in lower molar area is about:5 degrees10 degrees15 degrees20 degrees  <response>: In the posterior mandible, the submandibular fossa mandates implant placement with increasing angulation as it progresses distally. Hence in the second premolar region, the angulation may be 10 degrees to a horizontal plane; in the first molar area, 15 degrees; and in the second molar region, 20 to 25 degrees. 