A 45-year-old woman with no history of smoking presents with a 1.4-cm squamous cell carcinoma of the left anterior mandibular gingiva and an upper cervical neck mass. Full-thickness cortical invasion of the tumor into the superior mandible as well as a single enlarged lymph node is observed on CT scan. In addition to neck dissection, which of the following is the most appropriate surgical treatment?

26-year-old man presents to the ED because of jaw pain and malocclusion. He has normal dentition. CT scan shows an isolated, noncomminuted left-sided angle fracture of the mandible. Which of the following treatment methods is likely to have the lowest complication rate? 

An 11-year-old boy presents to the office after sustaining injury during a fall from his scooter. Orthopantomogram panoramic x-ray study shows displaced fracture of the body of the mandible on the left side, in the line of the first premolar. On clinical examination, the permanent lateral incisor appears longer than the lateral incisor on the right side. The permanent second molars have not yet erupted. Which of the following statements regarding management of this patient's injury is most accurate?

A 57-year-old man undergoes resection of a malignant lesion involving the mandible. He does not smoke cigarettes. Which of the following flaps is most appropriate to use for reconstruction of the resulting mandibular defect from ramus to ramus? 

One month after chondrolaryngoplasty for facial feminization, the patient reports that the pitch of her voice is lower than before surgery. She does not have hoarseness. Which of the following structures was most likely injured?