When a 2.5x15 mm 1-piece implant is being placed, it perforates into the buccal concavity again.  After redirection, the trajectory seems to be acceptable (Fig.2: CT coronal section).  The buccal plate reforms and #6 socket heals 12 months postop (6 months post cementation, Fig.15).

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Xin Wei, DDS, PhD, MS 1st edition 01/17/2020, last revision 01/19/2020