prepared short of sinus floor, some bone expansion with densah drills, prepared to sinus floor with CAS-kit. no evidence of sinus mmebrane perforation, CAS-kit protocol .5cc saline, packed 80/20 mix of mineralized cortical/xenograft, good pushback of bone, implant placed, small fx of buccal bone, no loss of bone, packed same graft material on buccal followed by collagen membrane