After a 4x10 mm implant is placed with fixture mounting (Fig.2 M) following sinus lift (*) at #12, osteotomy is initiated at #10 (Fig.1 (T: tube of surgical guide)).  It appears that the drill (D) has good trajectory (between the Incisive Canal (red dashed line) and the canine root).

Depth 1st Last Next Xin Wei, DDS, PhD, MS 1st edition 06/14/2019, last revision 06/14/2019