Accuracy of Computer Guided Four Implants Placement in Completely Edentulous Mandible

All surgical procedures with drills were done through the stent., the implant was picked up from the implant holder and then installed, still with the surgical guide in situ, by using the ratchet and ratchet connector at a motor speed of 20 rpm, followed by cover screw placement without the need for sutures.

"The first osteotomy was performed with the surgical guide in situ using a 1.95 mm pilot-drill. Successive color coded implant drills were used to prepare implant osteotomies. When using each twist drill, a removable sleeve having a diameter to coincide with the drill and inserted into the sleeve of the surgical guide.~The stereo lithographic guide template was removed and the receptor sites were irrigated with saline solution then the final drill of the implant system 3.5 mm diameter was used to finalize the osteotomy. The implant was gripped with the placement aid, released from the implant holder by 1/4 turn and manually inserted into the prepared implant site using a finger placement tool or hand ratchet. A torque of 45 N cm should not be exceeded during insertion procedure and cover screws were screwed over it."