Fixture mount does not fit at #13 as an anchor.  After 3.5x7.3 mm drill with 10.5 mm offset at #14, sinus lift drills (3.6x18 and 19 mm) are used.  The sinus floor is intact.  A 9 mm offset should be used.  Following 4.0x10 mm dummy implant is placed for ~ 8.5 mm, the sinus floor is perforated while the sinus membrane is intact.  After water lift, PRF membrane and allograft are inserted and pushed upward with the 4.0x10 mm dummy implant for ~ 10 mm (Fig.1). 

Enough Lift? Last Next

Xin Wei, DDS, PhD, MS 1st edition 08/13/2019, last revision 10/06/2019