目的评价上颌部动静脉畸形的PVA 永久性栓塞治疗。
Objective To evaluate the embolization of arteriovenous malformations of the maxillary region with PVA.
这两位研究人员表示，在打哈欠时，上颌窦的壁部(位于鼻子两边的脸颊上)像风箱一样弯曲，帮助大脑降温。
During yawning, the walls of the maxillary sinuses (located in the cheeks on each side of the nose) flex like bellows and help with brain cooling, according to the researchers.
在上颌，基牙的分布情况不允许做不覆盖腭部的设计。
In the maxilla, the abutment distribution did not allow a palatal-free restoration.
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