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It is known that congenitally missing teeth can often cause differences in craniofacial morphology; however, there are few reported cases of orthognathic surgical treatment for these patients. Herein, the authors report a rare case of maxillary hypoplasia with congenital oligodontia treated by maxillary distraction osteogenesis with internal device. A 17-year-old male presenting with multiple tooth agenesis and maxillary recession was referred to our hospital for orthognathic surgical treatment. Preoperative simulation surgery was performed using Full-Color 3-dimensional salt model. After surgery, improvement in maxillary recession and occlusal stability was observed. This report demonstrates the advantages of the method used herein, which includes reduction in operating time with increase in the safety of the procedure.

In this paper, we report a patient who developed angioedema of the face and pharynx after sagittal split ramus osteotomy, leading to suffocation.The patient was a 29-year-old female. To treat mandibular retrusion, sagittal split ramus osteotomy and maxillo mandibular fixation were performed under general anesthesia. The duration of surgery was 2 hours and 30 minutes, and the volume of blood loss was 50g.

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Purpose: In this report, we had managed to perioperative of mandibular fractures in a patient with severe hyperthyroidism. Methods: A 26-year-old man required emergency admission to the hospital after having a fall and losing consciousness. A computed tomography (CT) scan revealed a fracture line in the mental region and both sides of the condyle. He had a previous history of hyperthyroidism and was prescribed thiamazole, propranolol hydrochloride, and potassium iodide, but he did not take medicine by self-judgement. His laboratory findings were as follows: FT3, 7.53[Formula: see text]pg/mL; FT4, 4.26[Formula: see text]ng/mL; and TSH, undetectable. Therefore, we planned for surgery immediately after his condition improved. We also postponed his maxilla-mandibular fixation (MMF) procedure because there was a probability that MMF procedure caused thyroid crisis. Result: Seventeen days after his injury, he had greatly reduced his risk of having thyroid crisis, he underwent open reduction of his mandibular fractures under general anesthesia. As perioperative management, the patient underwent an opening training and oral care before and after surgery in addition to thyroidal treatment. Conclusion: The procedures prevented adhesion of temporomandibular joint and recovered aperture size. Moreover, we diagnosed agranulocytosis from intraoral lesion and obtained good course in response to early.