Finally a 6x11 mm implant is placed at #14 with insertion torque >60 Ncm (Fig.8).  The mesial threads appears not to be covered by one.  Prior to implant placement, a small amount of bone graft is placed at the osteotomy and sprinkled over the implant threads.  It is wish that more of collagen dressing were used to form the superior (apical) seal before placing more of bone graft in the sinus.

Internal Sinus Lift Perforation

Xin Wei, DDS, PhD, MS 1st edition 05/20/2015, last revision 05/21/2015