Journal of the Korean Association of Oral and Maxillofacial Surgeons

  • 제29권3호
  • /
  • Pages.173-181
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  • 2003
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  • 2234-7550(pISSN)
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  • 2234-5930(eISSN)
대한구강악안면외과학회 (The Korean Association of Oral and Maxillofacial Surgeons)
권호 표지

3-D CT를 이용한 악교정술 전후의 하악과 설골의 위치에 관한 연구

THE POSITIONAL RELATIONSHIP BETWEEN THE MANDIBLE AND THE HYOID BONE IN MANDIBULAR PROTRUSION AFTER ORTHOGNATHIC SURGERY EVALUATED WITH 3-D CT

  • 이상한 (경북대학교 치과대학 구강악안면외과학교실) ;
  • 남정훈 (경북대학교 치과대학 구강악안면외과학교실) ;
  • 정창욱 (경북대학교 치과대학 구강악안면외과학교실) ;
  • 권대근 (경북대학교 치과대학 구강악안면외과학교실)
  • Lee, Sang-Han (Dept. of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University) ;
  • Nam, Jeong-Hun (Dept. of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University) ;
  • Jung, Chang-Wook (Dept. of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University) ;
  • Kwon, Tae-Geon (Dept. of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University)
  • 발행 : 2003.06.30
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초록

Purpose : This study was intended to evaluate the positional relationship between the hyoid bone and the mandible in patients with mandibular protrusion after mandibular set-back surgery by means of 3D-CT. Materials and methods : Preoperative(3 weeks before) and postoperative (6 weeks after) 3D-CT & cephalogram were taken on 32 patients(12 male, 20 female, mean age of 23.2) treated by bilateral sagittal split osteotomy with rigid fixation. The angular measurement on 3D-CT basilar view were deviation of Me & H, long axis angle of left & right cornu majus. The lineal measurement on 3D-CT basilar view were composed of intercondylar line and coordinates(x,y) of Me & H. The angular & lineal measurement of lateral cephalogram were composed of mandibular plane angle, SNA, SNB, ANB, FH-NA & FH-NB, and coordinates(x,y) of B, Pog, Me & H, PAS, Lpw, MPH and IAS. On the frontal cephalogram, deviation of Me were evaluated. Results : The mean mandibular set-back was 8.0mm horizontally and mandibular plane angle was slightly increased. The hyoid bone was displaced postero-inferiorly, the distance between MP(mandibular plane) and H(hyoid bone) was increased and the posterior airway space values (PAS, Lpw, IAS) were decreased. The coordinates Me(x,y), H(x,y) and deviation angle Me'& H' were revealed the strong positive correlation. Conclusion : The results revealed that the horizontal, vertical and transverse relationship of the mandibular and the hyoid bone movements were significantly correlated in patients performed mandibular set-back surgery.

키워드

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