A relatively large 2-piece implant (3.5x13 mm) is placed (Fig.3), but a 4x5.7(2) mm abutment is incompletely seated (<).  Use of 4.6 and 5.6 mm bone profile drills does not appear to solve the problem.  The implant is backed up to the supra-gingival level so that it seems easier physically to insert the same abutment into the implant securely.  Then both of them are torqued into the place together (Fig.4).    The bone graft remains in place 4 months postop (Fig.6).

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Xin Wei, DDS, PhD, MS 1st edition 06/23/2020, last revision 06/23/2020