Song Wu-Chul, Kim Jeong-Nam, Yoo Ja-Young, Lee Ju-Young, Won Sung-Yoon, Hu Kyung-Seok, Kim Hee-Jin, Koh Ki-Seok
Department of Anatomy, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Korea.
J Craniofac Surg. 2012 Jul;23(4):1184-7. doi: 10.1097/SCS.0b013e3182587a4f.
The current study investigated the anatomy of the infraorbital canal (IOC) and its related small canals in the maxilla. Twenty-eight hemimaxillae from human cadavers were studied. The samples were scanned using microcomputed tomography, and then images were three-dimensionally reconstructed using computer software. The branch point of the canal into the anterior superior alveolar nerve from the IOC occurred at about one third along the length of the IOC in the anterior direction. Just over half of the cases had 1 canal. The branch arose either laterally (21/28) or inferiorly (7/28) from the IOC. There was a canal located at the inferior lateral border of the piriform aperture in all cases. The distribution of the canals in the maxilla is represented indirectly by the course and distribution of the nerve and blood vessels therein. This distribution could explain various phenomena encountered in the clinical field.
本研究调查了眶下管（IOC）及其在上颌骨中相关小管的解剖结构。对来自人类尸体的28个半侧上颌骨进行了研究。使用微型计算机断层扫描对样本进行扫描，然后使用计算机软件对图像进行三维重建。眶下管向前分出上牙槽前神经的分支点约位于眶下管长度的前三分之一处。略超过半数的病例有1条小管。分支从眶下管外侧（21/28）或下方（7/28）发出。所有病例在梨状孔的下外侧缘均有一条小管。上颌骨中小管的分布由其中神经和血管的走行及分布间接表示。这种分布可以解释临床中遇到的各种现象。
