lateral window prepared with rotary instrumentation and piezo instrumentation. no evidence of sinus membrane perforation, 1st layer collatape 2nd layer: 80/20 mix of mineralized cortical/xenograft, good pushback/placment of bone. implant osteotomies underprepared, implants placed, healing abutments placed, collagem membrane placed on internal aspect of lateral window followed by additional bone on buccal, another collagen membrane placed overtop, region closed with sutures.