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3D-CT를 이용한 골격성 III급 개방교합자의 악교정 수술 전, 후 설골 및 상기도의 변화

Other Titles
 The structural change in the hyoid bone and upper airway after orthognathic surgery for skeletal class III anterior open bite patients using 3-dimensional computed tomography 
 이윤섭  ;  백형선  ;  이기준  ;  유형석 
 KOREAN JOURNAL OF ORTHODONTICS, Vol.39(2) : 72-82, 2009 
Journal Title
Issue Date
Three-dimensional computed tomography (3D CT) ; Skeletal class lll openbite ; Hyoid bone ; Upper airway
Objective: The purpose of this study was to investigate the structural changes of the hyoid bone and upper airway after orthognathic surgery for skeletal class III anterior open bite patients, and make comparisons with normal occlusion. Methods: Pre- and post-operative computed tomography (CT) examinations were performed on 12 skeletal class III anterior open bite patients who were treated with mandibular setback osteotomy. Using the V-works $4.0^{TM}$ program, 3-dimensional images of the total skull, mandible, hyoid bone, and upper airway were evaluated. Results: In the Class III open bite group, the hyoid bone were all positioned anteriorly, compared to the Normal group (p < 0.05). The angle between the hyoid plane and mandibular plane in the Class III openbite group before surgery was greater than in the Normal group (p < 0.05), and the difference increased after surgery (p < 0.01). In the Class III openbite group, the volume of the upper airway decreased after surgery (p < 0.001) and the volume of the upper airway was smaller than the Normal group before and after surgery (p < 0.001). Conclusions: The narrow upper airway space in skeletal Class III openbite patients decreased after mandibular setback osteotomy. This may affect the post-surgical stability.
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Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Orthodontics (교정과학교실) > 1. Journal Papers
Yonsei Authors
Baik, Hyoung Seon(백형선)
Yu, Hyung Seog(유형석) ORCID logo https://orcid.org/0000-0002-1275-5078
Lee, Kee Joon(이기준) ORCID logo https://orcid.org/0000-0002-0782-3128
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