Three-dimensional analysis of pharyngeal airway change of skeletal class III patients in cone beam computed tomography after bimaxillary surgery
권영욱, 이종민, 강주완, 김창현, 박재억,
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권영욱 ( Kwon Young-Wook ) - Catholic University Seoul St. Mary’s Hospital Department of Oral and Maxillofacial Surgery
이종민 ( Lee Jong-Min ) - Catholic University Seoul St. Mary’s Hospital Department of Oral and Maxillofacial Surgery
강주완 ( Kang Joo-Wan ) - Catholic University Seoul St. Mary’s Hospital Department of Oral and Maxillofacial Surgery
김창현 ( Kim Chang-Hyen ) - Catholic University Seoul St. Mary’s Hospital Department of Oral and Maxillofacial Surgery
박재억 ( Park Je-Uk ) - Catholic University Seoul St. Mary’s Hospital Department of Oral and Maxillofacial Surgery
KMID : 0355620120380010009
Abstract
Introduction: To evaluate the 3-dimensional changes in the pharyngeal airway of skeletal class III patients after bimaxillary surgery. Materials and Methods: The study sample consisted of 18 Korean patients that had undergone maxillary setback or posterosuperior movement and mandibular bilateral sagittal split osteotomy setback surgery due to skeletal class III malocclusion (8 males, 10 females; mean age of 28.7). Cone beam computed tomography was taken 1 month before and 6 months after orthognathic surgery. Preoperative and postoperative volumes of the nasopharyngeal, oropharyngeal, and laryngopharyngeal airways and minimum axial areas of the oropharyngeal and laryngopharyngeal spaces were measured. Moreover, the pharyngeal airway volume of the patient group that had received genioplasty advancement was compared with the other group that had not. Results: The nasopharyngeal and laryngopharyngeal spaces did not show significant differences before or after surgery. However, the oropharyngeal space volume and total volume of pharyngeal airway decreased significantly (P <0.05). The minimum axial area of the oropharynx also decreased significantly. Conclusion: The results indicate that bimaxillary surgery decreased the volume and the minimum axial area of the oropharyngeal space. Advanced genioplasty did not seem to have a significant effect on the volumes of the oropharyngeal and laryngopharyngeal spaces.
키워드
Orthognathic surgery; Angle class III malocclusion; Pharynx
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