Taking 2 additional PAs with sensor 1 is frustrating (Fig.1,2), the image being blurred.
Careful exam reveals that the root of the tooth #11 curves distally (Fig.2' red line) over the apex of the tooth #12. The direction of the osteotomy after extraction at #12 should be adjusted accordingly.
Xin Wei, DDS, PhD, MS 1st edition 08/13/2015, last revision 01/19/2019