Journal of Yeungnam Medical Science
- Volume 25 Issue 2
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- Pages.108-116
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- 2008
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- 2799-8010(eISSN)
Comparision of Mandible Changes on Three-Dimensional Computed Tomography image After Mandibular Surgery in Facial Asymmetry Patients
안면 비대칭 환자의 하악골 수술 후 하악골 변화에 대한 3차원 CT 영상 비교
- Kim, Mi-Ryoung (Department of Dentistry, College of Medicine, Yeungnam University) ;
- Chin, Byung-Rho (Department of Dentistry, College of Medicine, Yeungnam University)
- Published : 2008.12.30
Abstract
Background : When surgeons plan mandible ortho surgery for patients with skeletal class III facial asymmetry, they must be consider the exact method of surgery for correction of the facial asymmetry. Three-dimensional (3D) CT imaging is efficient in depicting specific structures in the craniofacial area. It reproduces actual measurements by minimizing errors from patient movement and allows for image magnification. Due to the rapid development of digital image technology and the expansion of treatment range, rapid progress has been made in the study of three-dimensional facial skeleton analysis. The purpose of this study was to conduct 3D CT image comparisons of mandible changes after mandibular surgery in facial asymmetry patients. Materials & methods : This study included 7 patients who underwent 3D CT before and after correction of facial asymmetry in the oral and maxillofacial surgery department of Yeungnam University Hospital between August 2002 and November 2005. Patients included 2 males and 5 females, with ages ranging from 16 years to 30 years (average 21.4 years). Frontal CT images were obtained before and after surgery, and changes in mandible angle and length were measured. Results : When we compared the measurements obtained before and after mandibular surgery in facial asymmetry patients, correction of facial asymmetry was identified on the "after" images. The mean difference between the right and left mandibular angles before mandibular surgery was