Off axial placement of the implant (Fig.5 I) and abutment (A) is striking in the immediately postop PA (Fig.5).  Black *: septum; white *: bone graft.

In other word, the implant is placed mesially.  There would be a problem if the patient wanted to move #20 distally orthodontically.

Septum Placement

Xin Wei, DDS, PhD, MS 1st edition 04/02/2015, last revision 01/19/2018