Anatomy and Cell Biology

Korean Association of Anatomists (대한해부학회)
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Anatomical knowledge of zygomatico-buccal plexus in a cadaveric study

  • Sukanya Uruwan (Department of Anatomy, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital) ;
  • Chalermquan Rungsawang (Preclinical Department, Faculty of Medicine, Siam University) ;
  • Tawiwan Sareebot (Department of Biomedical Engineering, College of Health Sciences, Christian University of Thailand) ;
  • Tanvaa Tansatit (Department of Anatomy, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital)
  • Received : 2023.02.07
  • Accepted : 2023.03.21
  • Published : 2023.09.30
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Abstract

The details of the facial nerve pattern were clearly explained in the parotid gland (PG), lateral area of the face, and periorbital areas to prevent the unexpected outcome of medical intervention. However, it remains unclear whether information about the zygomatico-buccal plexus (ZBP) in the masseteric and buccal regions. Therefore, this study aimed to help clinicians avoid this ZBP injury by predicting their common location. This study was conducted in forty-two hemifaces of twenty-nine embalmed cadavers by conventional dissection. The characteristics of the buccal branch (BB) and the ZBP were investigated in the mid-face region. The results presented that the BB gave 2-5 branches to emerge from the PG. According to the masseteric and buccal regions, the BB were arranged into ZBP in three patterns including an incomplete loop (11.9%), a single-loop (31.0%), and a multi-loop (57.1%). The mean distance and diameter of the medial line of the ZBP at the corner of the mouth level were 31.6 (6.7) and 1.5 (0.6) mm respectively, while at the alar base level were 22.5 (4.3) and 1.1 (0.6) mm respectively. Moreover, the angular nerve arose from the superior portion of the ZBP at the alar base level. The BB formed a multiloop mostly and showed a constant medial line of ZBP in an area approximately 30 mm lateral to the corner of the mouth, and 20 mm lateral to the alar base. Therefore, it is recommended that physicians should be very careful when performing facial rejuvenation in the mid-face region.

Keywords

Acknowledgement

We would like to express my deepest gratitude to the cadaver who sacrificed their body for medical education. This research was supported by the 100th Anniversary Chulalongkorn University Fund for Doctoral Scholarship.

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