Liu P, Bai S K, Peng L W, Ma Z
Department of Oral and Maxillofacial Surgery, School of Stomatology, Zhengzhou University, Zhengzhou 450052, China.
Department of Oral and Maxillofacial Surgery, People's Hospital of Zhengzhou University, Zhengzhou 450003, China.
Zhonghua Kou Qiang Yi Xue Za Zhi. 2017 Oct 9;52(10):637-640. doi: 10.3760/cma.j.issn.1002-0098.2017.10.011.
To investigate the relationship between the inferior buccal branch and mandibular marginal branch of the facial nerve in the plane of angulus oris. Twenty unilateral adults cadaveric heads were dissected. In the vicinity of the posterior border of mandibular ramus, the positional relationship between mandibular marginal branch and the plane of angulus oris, the inferior buccal branch and the plane of angulus oris was recoded and analyzed. In 18 of the 20 samples, the plane of angulus oris was between the inferior buccal branch and mandibular marginal branch in the vicinity of the posterior border of mandibular ramus. In one sample, the plane of angulus oris was below the inferior buccal branch and mandibular marginal branch in the vicinity of the posterior border of mandibular ramus. Another sample was excluded because the starting points of the inferior buccal branch and mandibular marginal branch were in front of the posterior border of mandibular ramus. The distance from the intersection of the posterior border of mandibular ramus and the plane of angulus oris to the intersection of inferior buccal branch and the plane of angulus oris was (14.96±8.55) mm. In most cases studied, the plane of angulus oris is between the inferior buccal branch and mandibular marginal branch in the vicinity of the posterior border of mandibular ramus. Along the plane of angulus oris, within 1.0 cm anterior to the posterior border of mandibular ramus, it is a relatively safe place for surgical approach.
研究面神经颊下支与下颌缘支在口角平面的关系。对20例单侧成人尸体头部进行解剖。在下颌支后缘附近，记录并分析下颌缘支与口角平面、颊下支与口角平面的位置关系。在20个样本中的18个样本中，在下颌支后缘附近，口角平面位于颊下支与下颌缘支之间。在1个样本中，在下颌支后缘附近，口角平面位于颊下支与下颌缘支下方。另1个样本被排除，因为颊下支和下颌缘支的起点位于下颌支后缘前方。下颌支后缘与口角平面的交点至颊下支与口角平面交点的距离为(14.96±8.55)mm。在大多数研究病例中，在下颌支后缘附近，口角平面位于颊下支与下颌缘支之间。沿口角平面，在下颌支后缘前方1.0 cm范围内，是相对安全的手术入路部位。
