To prevent sinus membrane perforation, a piece of PRF membrane is inserted into the osteotomy, followed by mixture of autogenous bone, allograft (.5-1.5 mm) and Osteogen for sinus lift.  A 5x9 mm implant is placed with 50 Ncm as well as 6.5x4(3) mm abutment (Fig.5).

Change Trajectory Early

Xin Wei, DDS, PhD, MS 1st edition 12/20/2016, last revision 12/20/2016