摘要颜面部对称性是人类面部美学的重要构成因素,颜面部对称性研究中,确定颜面部正中矢状面是首要和重要的环节,其可直接影响对称性评价的准确性及后续的临床治疗效果.受限于技术手段,早期颜面部软组织的对称性研究主要基于二维影像的对称中线,随着三维测量手段和数据分析技术的发展,现今包括三维标志点构建法、本体-镜像关联法等方法逐渐成为确定颜面部软组织正中矢状面的主流方法.本文归纳和总结三维颜面部软组织正中矢状面的各类确定方法,阐述该领域的发展历程和最新研究进展,分析探讨各类方法的优势及局限性,以期为口腔临床应用提供参考.

abstractsFacial symmetry is a crucial component of human facial esthetics. Along with the increasing pursuit of aesthetic, in recent years, more and more researchers have focused on facial asymmetry assessment, of which determining the facial median sagittal plane is the first and most important step, and it will directly affect the accuracy of asymmetry evaluation and clinical treatment outcome. Limited by technical means, the earlier studies of facial soft tissue asymmetry assessment were mainly based on midline from two-dimensional (2D) images. Along with the development of three-dimensional (3D) measurement and data analysis techniques, new methods such as 3D landmark-based method and mirror-original alignment method have become main trend nowadays. This article systematically reviews the methods of determination of median sagittal plane of facial soft tissue, elaborates the developments and the latest research progress in this field, and discusses the advantages and limitations of each method in order to provide reference for clinical application.