上颌骨额突由梨状孔和泪嵴向头侧方向伸出，与额骨和鼻骨相接。

The maxillary processes extend in a cephalad direction form the piriform aperture to the lacrimal crest, uniting with the frontal and nasal bones.

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本文使用了昆明地区100例上颌骨标本观测了眶下孔、眶下管及其它相关的数据。

In this article, 100 maxilla samples of the Kunming area werc takcn for observing the suborbital foramen and infraorbital canal and their relative data.

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观测到眶下孔数目为单孔的占93％，呈卵园形，有副孔的占7％，并测量了它们在上颌骨的确定位置。

The results show that 93% of the suborbital foramen is an oval-shaped mono-foramen and 7% has a paraforamen, their exact positions on the maxilla being measured.

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