When a 6x17 mm implant is placed, a PA does not show the implant apex (Fig.4), but panoramic X-ray does (Fig.5). In fact the implant is placed between the 1st and 3rd molars. When PA presents angulation issue, take panoramic X-ray.
Xin Wei, DDS, PhD, MS 1st edition 11/12/2015, last revision 02/23/2021