文章基本信息
- 标题：Use of spherical coordinates to evaluate three-dimensional facial changes after orthognathic surgery
- 本地全文：下载
- 作者：Yoon, Suk-Ja ; Wang, Rui-Feng ; Ryu, Sun-Youl 等
- 期刊名称：Imaging Science in Dentistry
- 印刷版ISSN：2233-7822
- 出版年度：2014
- 卷号：44
- 期号：1
- 页码：15-20
- DOI：10.5624/isd.2014.44.1.15
- 语种：English
- 出版社：Korean Academy of Oral and Maxillofacial Radiology
- 摘要：Purpose
This study aimed to assess the three-dimensional (3D) facial changes after orthognathic surgery by evaluating the spherical coordinates of facial lines using 3D computed tomography (CT).
Materials and MethodsA 19-year-old girl was diagnosed with class III malocclusion and facial asymmetry. Orthognathic surgery was performed after orthodontic treatment. Facial CT scans were taken before and after orthognathic surgery. The patient had a menton deviation of 12.72 mm before surgery and 0.83 mm after surgery. The spherical coordinates of four bilateral facial lines (ramal height, ramal lateral, ramal posterior and mandibular body) were estimated from CT scans before and after surgery on the deviated and opposite side.
ResultsThe spherical coordinates of all facial lines changed after orthognathic surgery. Moreover, the bilateral differences of all facial lines changed after surgery, and no bilateral differences were zero.
ConclusionThe spherical coordinate system was useful to compare differences between the presurgical and postsurgical changes to facial lines.
- 关键词：Tomography, X-Ray Computed; Facial asymmetry; Orthognathic surgery
