When the patient returns for impression nearly 6 months postop, she feels mild pain.  In fact the temporary crown/abutment is loose and traps food underneath with the erythematous gingival cuff.  A 5.7x4(3) mm abutment is placed and torqued without gap for impression; the implant threads are exposed distal (Fig.4 <, as compared to immediate postop Fig.3).  Retrospectively, the incompletely seated cemented abutment should be tightened or removed ~ 1 month postop when the socket heals.

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Xin Wei, DDS, PhD, MS 1st edition 02/26/2020, last revision 06/07/2020