Fig.8: Immediately post placement of a 5x17 mm implant at the site of #20; 4x5 mm and 4x3 mm abutments are placed, respectively.

The apex of the original socket of #20 extends from the upper 3rd thread to the lower 3rd thread.

Fig.9: Five months postop.  The apex of the original socket not only decreases mesiodistally, but also vertically (from the upper 5th thread to the lower 5th thread).

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Xin Wei, DDS, PhD, MS 1st edition 07/22/2014, last revision 01/19/2018