Yoon Suk-Ja, Wang Rui-Feng, Na Hee Ja, Palomo Juan Martin
Department of Oral and Maxillofacial Radiology, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Korea.
Imaging Sci Dent. 2013 Mar;43(1):31-6. doi: 10.5624/isd.2013.43.1.31. Epub 2013 Mar 11.
This study aimed to measure the bilateral differences of facial lines in spherical coordinates from faces within a normal range of asymmetry utilizing cone-beam computed tomography (CBCT).
CBCT scans from 22 females with normal symmetric-looking faces (mean age 24 years and 8 months) were selected for the study. The average menton deviation was 1.01±0.66 mm. The spherical coordinates, length, and midsagittal and coronal inclination angles of the ramal and mandibular lines were calculated from CBCT. The bilateral differences in the facial lines were determined.
All of the study subjects had minimal bilateral differences of facial lines. The normal range of facial asymmetry of the ramal and mandibular lines was obtained in spherical coordinates.
The normal range of facial asymmetry in the spherical coordinate system in this study should be useful as a reference for diagnosing facial asymmetry.
本研究旨在利用锥形束计算机断层扫描（CBCT）测量不对称性在正常范围内的面部在球坐标中的双侧差异。
本研究选取了22名面部外观对称正常的女性（平均年龄24岁8个月）的CBCT扫描图像。平均颏点偏差为1.01±0.66毫米。从CBCT计算升支和下颌骨线的球坐标、长度以及矢状面和冠状面倾斜角度。确定面部线条的双侧差异。
所有研究对象的面部线条双侧差异均最小。在球坐标中获得了升支和下颌骨线面部不对称的正常范围。
本研究中球坐标系下面部不对称的正常范围可作为诊断面部不对称的参考。
