Changes of Pharyngeal Airway Space after Mandibular Setback Surgery in Computed Tomography Images

전산화단층촬영상에서 하악후퇴수술 후 인두기도 공간의 변화

  • Kim, Bang-Sin (Department of Oral & Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Post-Brain Korea 21, Chonnam National University) ;
  • Jung, Seung-Gon (Department of Oral & Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Post-Brain Korea 21, Chonnam National University) ;
  • Han, Man-Seung (Department of Oral & Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Post-Brain Korea 21, Chonnam National University) ;
  • Jeoung, Youn-Wook (Department of Oral & Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Post-Brain Korea 21, Chonnam National University) ;
  • Kook, Min-Suk (Department of Oral & Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Post-Brain Korea 21, Chonnam National University) ;
  • Park, Hong-Ju (Department of Oral & Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Post-Brain Korea 21, Chonnam National University) ;
  • Oh, Hee-Kyun (Department of Oral & Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Post-Brain Korea 21, Chonnam National University) ;
  • Ryu, Sun-Youl (Department of Oral & Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Post-Brain Korea 21, Chonnam National University)
  • 김방신 (전남대학교 치의학전문대학원 구강악안면외과학교실, 치의학연구소, 2단계 BK21) ;
  • 정승곤 (전남대학교 치의학전문대학원 구강악안면외과학교실, 치의학연구소, 2단계 BK21) ;
  • 한만승 (전남대학교 치의학전문대학원 구강악안면외과학교실, 치의학연구소, 2단계 BK21) ;
  • 정연욱 (전남대학교 치의학전문대학원 구강악안면외과학교실, 치의학연구소, 2단계 BK21) ;
  • 국민석 (전남대학교 치의학전문대학원 구강악안면외과학교실, 치의학연구소, 2단계 BK21) ;
  • 박홍주 (전남대학교 치의학전문대학원 구강악안면외과학교실, 치의학연구소, 2단계 BK21) ;
  • 오희균 (전남대학교 치의학전문대학원 구강악안면외과학교실, 치의학연구소, 2단계 BK21) ;
  • 유선열 (전남대학교 치의학전문대학원 구강악안면외과학교실, 치의학연구소, 2단계 BK21)
  • Received : 2010.04.29
  • Accepted : 2010.11.23
  • Published : 2011.01.31

Abstract

Purpose: This study evaluated the pharyngeal airway space changes in CT images in patients receiving bilateral sagittal split osteotomy (BSSRO) for the surgical correction of mandibular prognathism. Methods: A total of 22 patients with mandibular prognathism were treated using BSSRO. Computed tomography was performed 1 month (T0) before surgery and, 1 month after surgery (T1). The anteroposterior length (AP), lateral width (LAT) and cross-sectional area (AREA) at the level of soft palate (C2) and base of the tongue (C3) were measured using CT images. Results: The mean amount of mandibular setback was 7.41 mm (${\pm}$3.46 mm). All the AP, LAT and AREA at the C2 and C3 level were decreased significantly 1 month after surgery (P<0.001). As the amount of mandibular setback was increased, the AP, LAT and AREA levels at the level of C2 and C3 had decreased. In addition, the reduction of the AREA at the C3 level was associated with the amount of mandibular setback (P<0.05). Conclusion: A significant decrease in pharyngeal airway space was observed 1 month after the operation. The cross-sectional area at the level of base of tongue was decreased with increasing amount of mandibular setback.

Keywords

References

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