Anterior nasal spine
The spina nasalis anterior (dt. Nasal spinous process) is a bony thickening at the junction of the right and left upper jawbone ( sutura inter maxillaris ). It is the lowest, foremost point in the midline of the piriform aperture . The cartilaginous nasal septum is attached to it with particularly strong collagen fibers.
Clinical significance
Often bony ridges pull back from this point, which narrow the nasal cavity and make nasal breathing difficult. Even if the nasal septum is next to the anterior nasal spine as a result of an accident or congenitally, nasal breathing can be impeded. One then speaks of a (sub) dislocation of the nasal septum. These changes can be corrected surgically as part of a septoplasty . Otherwise, the anterior nasal spine contributes little to characterizing the midface profile.
The anterior nasal spine is an important reference point for determining the German horizontal and the Camper's plane when making dentures or special X-rays.
Animation. Anterior nasal spine marked in red.
Left maxillary bone. Anterior nasal spine marked in red.
Right maxillary bone from the center. Spina nasalis anterior left is marked with its English name Anterior nasal spine .
Individual evidence
- ↑ Figure in the dictionary of the University of Mainz ( Memento of the original from March 4, 2016 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ^ EA Holtgrave: The importance of the anterior nasal spine for the midface profile. In: Advances in Orthodontics. 45, No. 1, 1984, pp. 15-23, doi : 10.1007 / BF02167031 .
- ↑ Diagnosis of facial skull fractures ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
