An ideal trajectory is determined by drawing 2 horizontal lines (at crestal and apical levels: red lines in Fig.13), finding a central point of each line (vertical short line) and joining these 2 central points (Fig.14 pink line).  In fact the ideal osteotomy should have been established distal to the septum in this case.

Bone Shorter Than Expected Last Next

Xin Wei, DDS, PhD, MS 1st edition 08/25/2018, last revision 08/25/2018