(J Korean Assoc Oral Maxillofac Surg 2012;38:9-13) 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.Key words: Orthognathic surgery, Angle class III malocclusion, Pharynx [paper submitted 2011Pharynx [paper submitted . 8. 24 / revised 2011Pharynx [paper submitted . 11. 1 / accepted 2012 The majority of previous studies on pharyngeal airway change of skeletal class III patients after bimaxillary surgery have been conducted mainly by means of twodimensional analysis using lateral cephalometric radiograph 1,614 . Few studies on threedimensional analysis using computed tomo grapy (CT) reported that the pharyngeal airway space had insignificant change or even had increased after mandibular setback surgery 24. Such disagreement was believed to have resulted from the difference in the corres ponding movement direction of the maxilla.The main purpose this retrospective study is to evaluate the changes of pharyngeal airway volume and minimal axial area in skeletal class III patients undergoing mandibular setback and maxillary setback or posterosuperior movement surgery, which is expected to decrease the pharyngeal airway space. Additionally, the effect of genioplasty advancement on pharyngeal airway was evaluated.
Angioedema is defined as self-limited, localized swelling. The swelling is asymmetric, non-pitting, and non-tender. Common locations of swelling include periorbital area, lips, tongue, extremities, and bowel wall. A 54-year-old woman visited our hospital with the clinical complaint of left maxillary swelling. Swelling of the left maxillary area was diffuse and temperature of the involved area was normal. No infectious source was found on panoramic radiography and cone-beam computed tomography. After considering the patient's medical history and assessing clinical examination, we suspected angioedema and administered corticosteroid only. In the oral and maxillofacial area, proper diagnosis and prompt treatment of angioedema is important because angioedema of the tongue or larynx may lead to airway obstruction or a life-threatening condition.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.