The above picture is the day of surgery.
If it is not possible to visualize the bottom of the osteotomy, use a perio probe or an endo plugger to expose the bottom of the osteotomy. If a soft area is found, the membrane is exposed and no further drilling is needed. Do not manipulate the membrane. Insert the Sinus Graft™ tip and inject Sinus Graft™ to lift the membrane. If the bottom of the osteotomy is not smooth, Sinus Graft™ may flow back out of the osteotomy. In that case, smooth the floor of the osteotomy to get a seal with the tip and bone and inject the graft material. For a sinus bump, one syringe will be adequate, but the sinus membrane can be lifted as much as is desired by injecting more graft material.