After sinus lift with IS 4x10 mm dummy implant with guide, the tissue-level tap and implant placed free hand look deep (Fig.3').  In fact the trajectory of the tap and implant should have been checked with the guide reseated.  In fact the implant exfoliates with the abutment 4.5 months postop (Fig.8).  Bone graft seems to be necessary (sticky bone).

Sloped Sinus Floor Last Next Redo

Xin Wei, DDS, PhD, MS 1st edition 01/23/2020, last revision 05/18/2020