When the dummy implant is removed, more bone graft is placed into the osteotomy and pushed into the sinus with the 5x11 mm final implant (Fig.5).  Second round of bone graft is placed next to the implant before placing a 4.5x4(2) mm abutment, but the latter appears not to be seated completely, as indicated by the arrowhead.  The implant is placed mesial.  The mesial crest (C) may prevent the abutment from seating.

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Xin Wei, DDS, PhD, MS 1st edition 02/07/2020, last revision 02/08/2020