After insertion of a definitive abutment (6.5x5.5(4) mm), more allograft is placed coronally (Fig.3 *).  There is no apparent thread exposure 4 months postop (Fig.10).  In fact the abutment has been incompletely seated since day one.

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Xin Wei, DDS, PhD, MS 1st edition 06/15/2019, last revision 12/26/2019