13 atraumatic exo, straightforward immediate placement, softer bone, 15 limited B-L width of bone, densah drills used after 2.0mm drill, entry into sinus chamber with densah drills, packed about 1cc of allograft, good pushback of bone, impant placed, loss of buccal plate about 1-2mm, placed implant to lower level but buccal plate is narrow, grafted entire region followed by collagen membrane (1st stage)/