An 18-year-old man undergoes Le Fort I advancement for correction of a 10-mm maxillomandibular discrepancy as a result of maxillary hypoplasia. Which of the following diagnoses places this patient at greatest risk for postoperative development of velopharyngeal incompetence?  

An 18-year-old man is evaluated because of an overbite. Cephalometric analysis shows an SNA angle of 83 degrees (N 82 ± 3) and an SNB angle of 74 degrees (N 80 ± 3). Which of the following is the most likely underlying cause of this condition?   

A 41-year-old man comes to the emergency department because he is unable to close his mouth after yawning. He reports pain in the jaw. Which of the following is the most appropriate initial treatment?  

A 16-year-old girl with facial asymmetry secondary to hemifacial microsomia comes to the office for evaluation of orthognathic surgery. Which of the following procedures puts her at the highest risk for perioperative bleeding?  

. A 22-year-old woman presents with long vertical facial height, narrow constricted alar bases, and lip incompetence. She has excessive gingival and upper incisor show at rest and while smiling. Which of the following is the most appropriate treatment for correction of the deformity?