The postop panoramic X-ray is taken to determine whether there is enough bone to place the implant at #13 deeper (Fig.5). In fact there is enough apical bone. Since the implant at #13 is more apical than the one at #12, the position of the implant at #13 remains unchanged.
Xin Wei, DDS, PhD, MS 1st edition 09/15/2017, last revision 09/15/2017