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

• 영문명: THE POSITIONAL RELATIONSHIP BETWEEN THE MANDIBLE AND THE HYOID BONE IN MANDIBULAR PROTRUSION AFTER ORTHOGNATHIC SURGERY EVALUATED WITH 3-D CT
• 발행기관: 대한구강악안면외과학회
• 저자명: 이상한(Sang-Han Lee) 남정훈(Jeong-Hun Nam) 정창욱(Chang-Wook Jung) 권대근(Tae-Geon Kwon)
• 간행물 정보: 『대한구강악안면외과학회지』대한구강악안면외과학회지 제29권 제3호, 173~181쪽, 전체 9쪽
• 주제분류: 의약학 > 내과학
• 파일형태: PDF
• 발행일자: 2003.06.30

영문 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

Positional relationship Hyoid bone 3-D CT Orthognathic Surgery