三维摄影技术结合锥形术CT评估颜面部不对称患者正颌手术前后的软硬组织变化

摘要/Abstract

摘要： 目的探讨骨性III类颜面部不对称畸形的患者正畸正颌联合治疗前后，面部软硬组织各部分对称性的改变。方法选择20例来我院进行正畸正颌联合治疗的骨性三类偏颌患者，在术前、术后拍摄的锥形术计算机断层扫描（cone-beam computed tomography scans, CBCT）与三维照片（Three-dimensional facial scanning images , 3dMd）上描记25个标志点，对同一标志点术前术后的不对称性进行统计分析。结果软组织中，上唇缘点、下唇缘点、左右口角点、颏前点、颏下点的不对称性差异有统计学意义。硬组织中，B点、颏前点、颏下点的不对称性差异有统计学差异。结论正畸正颌联合治疗后的病人，其唇部、颏部软组织不对称性得到巨大改善，下颌硬组织不对称性有较大改变，而鼻部软组织、上颌骨、下颌角部分无明显改变。

关键词: 正颌, 面部不对称, 三维分析

Abstract: Objective: To study how the symmetry of hard and soft tissues of patients with facial asymmetry change after orthognathic surgery. Methods: 20 patients diagnosed with skeletal class Ⅲ malocclusion and facial asymmetry who underwent orthognathic surgery were enrolled. Three-dimensional facial scanning images (3dMd) and cone-beam computed tomography scans (CBCT) were obtained before and after the surgery. 25 landmarks were chosen to calculate symmetry indexes. Results: Among soft tissue, there was a statistically significant difference in symmetry index of upper lip edge point, lower lip edge point, left and right cheilion, pogonion, menton. Among hard tissue, there was a statistically significant difference in the symmetry index of B point, pogonion, menton. Conclusion: After orthognathic surgery, symmetry of soft tissue of lips and chin, hard tissue of mandible were improved a lot. However, there was no significant improvement in symmetry of nasal tissue, maxilla mandibular angle.

Key words: orthognathic surgery, facial asymmetry, threedimensional analysis

中图分类号:

R783.5

徐雅婷吴嵩宋志芸巢舒铭陈文静. 三维摄影技术结合锥形术CT评估颜面部不对称患者正颌手术前后的软硬组织变化[J]. 口腔医学, 2020, 40(2): 117-120.

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