Fig. 3

Lateral cephalograms of patient 1 preoperatively (a) and postoperatively (b), as well as an illustration of the surgery associated with the patient’s maxillomandibular advancement. a The patient’s midface hypoplasia, with the horizontal arrow highlighting the tip of the tongue in the open bite. The somewhat vertical white line placed over the base of the tongue illustrates its proximity to the posterior pharyngeal wall. The three elements of the maxillomandibular advancement are the LeFort 1 (LF), advancing the maxillae; the bilateral sagittal split ramus osteotomy (BSSRO), creating a “trombone slide” advancement of the mandible; and an anterior inferior mandibular osteotomy (AIMO) or “genioplasty,” moving forward the insertion of the genioglossus onto the mandible. b Postoperative lateral cephalogram of patient 1. The midface hypoplasia has been corrected, and the open bite has been closed by the orthodontic intervention. The vertical white line highlights the increased space between the base of the tongue and the posterior pharyngeal wall