Fig. 1From: A novel guided surgery system with a sleeveless open frame structure: a retrospective clinical study on 38 partially edentulous patients with 1 year of follow-upPre-operative situation. The young patient presented with an old Maryland bridge, and asked the surgeon to replace it with two fixed implant-supported restorations. a Right side, radiographic control. The horizontal space between the roots of the adjacent teeth was narrow. b The Maryland bridge in position, occlusal view.; c Left side, radiographic control. The horizontal space between the roots of the adjacent teeth was narrowBack to article page