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The anterior nasal spine is a bony projection in the skull that serves as a cephalometric landmark. Medially, the anterior surface of the maxilla is limited by a deep concavity, the nasal notch, the margin of which gives attachment to the dilator naris posterior and ends below in a pointed process, which with its fellow of the opposite side forms the anterior nasal spine. ==Additional images== File:Anterior nasal spine of maxilla - animation02.gif|Animation. Anterior nasal spine shown in red. File:Anterior nasal spine of maxilla - animation00.gif|Left maxilla. Anterior nasal spine shown in red. File:Anterior nasal spine of maxilla - skull - anterior view.png|Skull. Anterior view. Anterior nasal spine shown in red. File:Slide12hhhh.JPG|Right maxilla. Anterior nasal spine labeled at center left. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「anterior nasal spine」の詳細全文を読む スポンサード リンク
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