When the preop PA is taken, it is difficult to place the sensor deep.  First sensor 2 is tried without success.  When sensor 1 is inserted, the PA shows one border of the Inferior Alveolar Canal, most likely the inferior one (Fig.1 arrowheads).

Non-Immediate Implant in Lower 2nd Molar Next

Xin Wei, DDS, PhD, MS 1st edition 05/31/2015, last revision 11/20/2018