Fig.6: T: 5x20 mm tap, which penetrates the sinus floor.

Fig.7: I: 5x20 mm implant.  The long implant helps primary stability: there is a lot of bone contact in the mesial surface of the implant (between arrowheads). 

No bone graft is placed into the sinus.  The sinus floor is found to be perforated by probing.  Bone graft may cause sinus infection in this situation.

Depth of Bone Graft

Xin Wei, DDS, PhD, MS 1st edition 11/03/2014, last revision 01/19/2018