Nanayakkara Deepthi, Peiris Roshan, Mannapperuma Navini, Vadysinghe Amal
Division of Anatomy, Department of Basic Sciences, Faculty of Dental Sciences, University of Peradeniya, 20400 Peradeniya, Sri Lanka.
Department of Forensic Medicine, Faculty of Medicine, University of Peradeniya, 20400 Peradeniya, Sri Lanka.
Anat Res Int. 2016;2016:7917343. doi: 10.1155/2016/7917343. Epub 2016 Dec 25.
The present study was conducted to ascertain the shape, size, presence of accessory foramina, direction, and the precise position of the infraorbital foramen (IOF) in relation to the inferior orbital margin (IOM), anterior nasal spine (ANS), nasion (Na), maxillary teeth, and supraorbital foramen/notch (SOF/N) in adult skulls in a Sri Lankan population. Fifty-four skulls (42 males and 12 females) were analyzed. The IOF was oval in shape (38.6% and 36.3% on the right and left side, resp.) in a majority of skulls. The direction of the IOF was mostly medially downward (48.6%). Accessory foramina were found in 7.4% of the skulls. The infraorbital foramina were located at a mean distance of 6.52 ± 2.03 mm and 7.30 ± 1.57 mm, vertically below the IOM on the right and left side, respectively; 33.81 ± 2.68 mm and 34.23 ± 2.56 mm from the ANS on the right and left side, respectively; and 42.37 ± 3.52 mm and 42.52 ± 3.28 mm from the Na on the right and left side, respectively. In relation to the upper teeth the majority of IOF (37.5% and 55.9% on the right and left side, resp.) were located in the same vertical axis as the tip of the buccal cusp of the maxillary second premolar tooth.
本研究旨在确定斯里兰卡成年人群颅骨中眶下孔（IOF）的形状、大小、副孔的存在、方向以及相对于眶下缘（IOM）、前鼻棘（ANS）、鼻根（Na）、上颌牙齿和眶上孔/切迹（SOF/N）的精确位置。分析了54例颅骨（42例男性和12例女性）。大多数颅骨的眶下孔呈椭圆形（右侧和左侧分别为38.6%和36.3%）。眶下孔的方向大多是向内下（48.6%）。在7.4%的颅骨中发现了副孔。眶下孔分别位于眶下缘右侧和左侧垂直下方平均距离6.52±2.03毫米和7.30±1.57毫米处；分别距离右侧和左侧前鼻棘33.81±2.68毫米和34.23±2.56毫米处；分别距离右侧和左侧鼻根42.37±3.52毫米和42.52±3.28毫米处。相对于上牙，大多数眶下孔（右侧和左侧分别为37.5%和55.9%）与上颌第二前磨牙颊尖尖端位于同一垂直轴上。
