Different Surgical Drilling Protocols in Posterior Maxilla

In group A The implant site preparation was made according to the protocol of the manufacturer except that the final drill was omitted. The drilling was done using a low speed reduction, high torque with coolant contra-angle hand piece with surgical motor unit. Speed of drilling was 800-1200 rpm.

In group B The implant bed was prepared using the new specially designed drills. First, the use of the guide drill of length 3.5mm with speed of 800 rpm and torque of 35 nm, then the use of the one drill of the same diameter of the selected implant size to the full length of the osteotomy site.