Fig. 3

Advancement genioplasty using a surgical guide. a Intraoperative view with the surgical guide in position, with two screws for fixation, avoiding the eventual position of the metal plate. The osteotomy line was drawn along the fixed guide. The cut chin bone was displaced anteriorly, according to the anteroposterior width of the surgical device. b Using a bur or cutter, a portion of the guide was cut away so that the metal plate could fix the bony segments together. c After fixing the plate to the chin, we confirmed its stability and removed the device