Maxillofacial Plastic and Reconstructive Surgery

Korean Association of Maxillofacial Plastic and Reconstructive Surgeons (대한악안면성형재건외과학회)
권호 표지

OBLIQUE TRANSCRANIAL RADIOGRAPHIC ANALYSIS OF CHANGES IN CONDYLE POSITION FOLLOWING SAGITTAL SPLIT RAMUS OSTEOTOMY IN MANDIBULAR PROGNATHISM

측사위경두개방사선사진(Oblique Transcranial Radiograph)을 이용한 하악전돌증환자의 하악지 시상골절단술후 하악과두위치변화 분석

  • Kwon, Tae-Geon (Department of Oral & Maxillofacial Surgery, School of Dentistry, Kyungpook National University) ;
  • Jang, Hyun-Jung (Department of Oral & Maxillofacial Surgery, School of Dentistry, Kyungpook National University) ;
  • Lee, Sang-Han (Department of Oral & Maxillofacial Surgery, School of Dentistry, Kyungpook National University)
  • 권대근 (경북대학교 치과대학 구강악안면외과학교실) ;
  • 장현중 (경북대학교 치과대학 구강악안면외과학교실) ;
  • 이상한 (경북대학교 치과대학 구강악안면외과학교실)
  • Published : 1995.03.31
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Abstract

This study was intended to evaluate condyle position and the relationship of condyle position change and post surgical relapse following the sagittal split ramus osteotomy for mandible setback in 25 patients by paired t-test and multiple regression analysis. We used oblique transcranial and cephalometric radiographs taken before operation, immediate after operation, and at least 6 months post operatively. 1. In oblique transcranial view, posterior joint space was decreased immediate after operation and increased 6 months after operation. To compare the measurement before and 6 months after operation, there was no statistically significant change in over all joint spaces(P>0.05). 2. The joint spaces changed under the 0.2mm were 30%, 0.2mm to 1.0mm were 60.7%, above 1.0mm were 9.3%. This result reveals that condyle position was relatively reproduced to pre-operative state. 3. Statistically, the amount of mandible set back didn't influence the post operative relapse(P>0.05). 4. Statistically, the amount of mandible set back didn't influence the condylar displacement(P>0.05), and the amount of joint space change didn't influence the post operative relapse.(P>0.05) The changes in joint space is in the standard tracing error or within the adaptive capacity of the individual, it was too small to influence the stability of surgery.

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