Fig. 3From: Sandwich bone graft for vertical augmentation of the posterior maxillary region: a case report with 9-year follow-up a A paracrestal incision was made on the buccal side, and horizontal and vertical osteotomies were made with a piezo-electric device. b Placement of the ramus bone block as an interpositional graft. c Ramus bone graft fixedBack to article page