3D-CT evaluation of facial asymmetry in patients with maxillofacial deformities
3D-CT evaluation of facial asymmetry in patients with maxillofacial deformities
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DOI：
10.1016/j.tripleo.2005.10.057
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发表时间：
2006-09-01
期刊：
影响因子：
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通讯作者：
Ariji, Eiichiro
中科院分区：
文献类型：
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作者：
Maeda, Masahito;Katsumata, Akitoshi;Ariji, Eiichiro
目的：本研究的目的是描述面部畸形患者的对称特征，并提出基于三维计算机断层扫描（3D-CT）评估的面部不对称分类系统。研究设计：对 49 例颌面部畸形患者进行术前 CT 图像调查。计算上颌骨、下颌体和下颌升支区域的一些标志的不对称指数。结果：不对称现象在下颌体区域最常见。受试者被分为 3 组。 3个区域没有任何不对称性的受试者被归为第一组（44.9%）。 II 组或 III 组分别定义为没有或有上颌区域不对称的受试者，并对它们进行了细分。在IIA组（8.2%）中，仅在下颌体区域显示出不对称性，在IIB组（18.4%）中，在下颌支区域显示出额外的不对称性。 IIIA组（6.1%）仅在上颌区域显示不对称，IIIB组（22.4%）在所有3个区域均显示不对称。结论：面部不对称的3D-CT分类有潜力取代传统的头影测量分类。
Objective: The aims of this study were to characterize the symmetrical features of patients with facial deformities and to suggest a classification system for facial asymmetry based on 3-dimensional-computed tomography (3D-CT) evaluation.Study design: Preoperative CT images were investigated for 49 patients with maxillofacial deformities. Asymmetry indices were calculated for some landmarks in the maxilla, mandibular body and the mandibular ramus regions.Results: Asymmetry was observed most frequently in the mandibular body region. The subjects were divided into 3 groups. Subjects without any asymmetry in the 3 regions were classified as Group I (44.9%). Groups II or III were defined for subjects without or with maxillary region asymmetry, respectively, and they were subcategorized. In Group IIA (8.2%), asymmetry was shown solely in the mandibular body region, and in Group IIB (18.4%), additional asymmetry was shown in the mandibular ramus region. Group IIIA (6.1%) showed asymmetry only in the maxillary region, and Group IIIB (22.4%) showed asymmetry in all 3 regions.Conclusion: The 3D-CT classification for facial asymmetry has the potential to replace the conventional cephalometric classification.