Faculty of Dentistry, Universitas Padjadjaran, Bandung, Indonesia; Centre for Anatomy and Human Identification, University of Dundee, Scotland, United Kingdom; School of Dentistry, University of Dundee, Scotland, United Kingdom.
Centre for Anatomy and Human Identification, University of Dundee, Scotland, United Kingdom.
Morphologie. 2021 Feb;105(348):24-28. doi: 10.1016/j.morpho.2020.06.009. Epub 2020 Aug 14.
Thezygomaticus major is a principal muscle of facial expression which is engaged when smiling. The zygomaticus major origin of the zygomatic bone is often discussed relevant to its importance in the field of plastic surgery. In addition, the zygomaticus major attachment site is also significant for forensic craniofacial reconstruction, separating the cheek into frontal and lateral surfaces. However, there are discrepancies amongst published articles regarding the precise origin of the zygomaticus major muscle. The aim of this study is to investigate more distinctive and palpable landmarks as the bony attachment of the zygomaticus major.
This project is the first zygomaticus major dissection study utilising Thiel embalmed cadavers. Fifty-two facial dissections were investigated in 26 Thiel embalmed bodies, bequeathed to the Centre for Anatomy and Human Identification at The University of Dundee between 2013 and 2015.
This study found that the origin of zygomaticus major muscle was located at the superior margin of the temporal process on the lateral surface of zygomatic bone. Moreover, the zygomaticus major muscle overlapped the anterosuperior border of the masseter muscle. One out of 52 zygomaticus major muscles presented bifurcation.
The origin site of zygomaticus major is considered important to increase resemblance in forensic craniofacial reconstruction. Furthermore, since zygomaticus major is a salient muscle involved in facial expression, the potential effects for cosmetic/surgical procedures are also relevant to the medical field and successful surgical outcomes. The current study provided easily palpable landmarks of zygomaticus major origin site which is beneficial for both surgeons and forensic craniofacial reconstruction practitioners.
颧大肌是参与微笑的主要面部表情肌。颧大肌起于颧骨，其在整形外科领域的重要性常被讨论。此外，颧大肌的附着部位对于法医颅面重建也很重要，它将脸颊分为正面和侧面。然而，关于颧大肌的确切起点，发表的文章之间存在差异。本研究旨在寻找更具特征性和可触及的标志作为颧大肌的骨性附着点。
本项目是首次利用蒂尔氏防腐尸体进行的颧大肌解剖研究。在 2013 年至 2015 年间，赠送给邓迪大学解剖与人类鉴定中心的 26 具蒂尔氏防腐尸体中进行了 52 例面部解剖。
本研究发现，颧大肌的起点位于颧骨外侧颞骨颧突的上缘。此外，颧大肌与咬肌的前上缘重叠。52 块颧大肌中有 1 块发生了分叉。
颧大肌的起点位置对于增加法医颅面重建的相似度很重要。此外，由于颧大肌是参与面部表情的重要肌肉，因此其在美容/外科手术中的潜在影响也与医学领域和手术成功相关。本研究提供了颧大肌起点的易触及标志，这对外科医生和法医颅面重建从业者都有益。
