The implant is backed up and re-directed. The trajectory is changed within normal limit (Fig.2); the torque is slightly less than before. The distal 2nd thread is outside the crestal bone (<).
When the patient returns for impression 6.5 months postop, the provisional has dislodged because of the short abutment (Fig.7 A (6.5x4(2) mm). A longer one is placed (6.5x5(3) mm). The original sinus floor has been resorbed, while there is bone formation apical to the implant (*). Two distal threads are not covered by the bone. Therefore the implant should have been placed higher. There is a distinct layer of bone apical to the implant 22 months post cementation (Fig.10 *).
Trajectory Last Next Xin Wei, DDS, PhD, MS 1st edition 02/27/2015, last revision 09/05/2019