Fig. 1From: Influence of buccal and palatal bone thickness on post-surgical marginal bone changes around implants placed in posterior maxilla: a multi-centre prospective studyImplant site preparation with ultrasonic inserts. (A) Pilot osteotomy with IM1 insert; (B) Implant osteotomy was enlarged at 2 mm diameter with IM2 insert; (C) Final preparation of the cortical bone with IP 3-4 insert; (D) The implant used in the present study (Twinfit, Dentaurum, Ispringen, Germany)Back to article page