The anterior superior alveolar nerve (or anterior superior dental nerve) is a branch of the infraorbital nerve (itself a branch of the maxillary nerve (CN V2)).[1] It passes through the canalis sinuosus to reach and innervate upper front teeth. Through its nasal branch, it also innervates parts of the nasal cavity.
| Anterior superior alveolar nerve | |
|---|---|
 | |
 Alveolar branches of superior maxillary nerve and sphenopalatine ganglion. | |
| Details | |
| From | Infraorbital nerve |
| Innervates | Dental alveolus |
| Identifiers | |
| Latin | rami alveolares superiores anteriores nervi maxillaris, ramus alveolaris superior anteriores |
| TA98 | A14.2.01.052 |
| TA2 | 6241 |
| FMA | 52935 |
| Anatomical terms of neuroanatomy | |
Anatomy
editCourse and distribution
editIt branches from the infraorbital nerve within the infraorbital canal[1][2] at around the midpoint of this canal and enters the canalis sinuosus. It passes through towards the nose before passing inferior-ward and ramifying[2] into branches which innervate the upper/maxillary incisor and canine teeth;[1][2] it usually innervates all the anterior teeth.[citation needed]
Nasal branch
editIt issues a nasal branch which passes through a minute canal in the lateral wall of the inferior nasal meatus and innervates the mucous membrane of the floor and anterior portion of lateral wall (as far superiorly as the opening of the maxillary sinus) of the nasal cavity. It ultimately emerges close to the root of the anterior nasal spine to innervate the adjacent portion of nasal septum.[2]
Communications
editThe nerve participates in the formation of the superior dental plexus[2] by looping posterior-ward to[citation needed] communicate with the middle superior alveolar nerve.[3]
The nasal branch communicates with nasal branches of the sphenopalatine ganglion.[2]
See also
editReferences
edit- ^ a b c Jones, Frederic Wood (July 1939). "The anterior superior alveolar nerve and vessels". Journal of Anatomy. 73 (Pt 4): 583–591. PMC 1252464. PMID 17104781.
- ^ a b c d e f Standring, Susan (2020). Gray's Anatomy: The Anatomical Basis of Clinical Practice (42th ed.). New York. p. 656. ISBN 978-0-7020-7707-4. OCLC 1201341621.
{{cite book}}: CS1 maint: location missing publisher (link) - ^ Gray, Henry (1918). Gray's Anatomy (20th ed.). p. 891.
External links
edit- MedEd at Loyola GrossAnatomy/h_n/cn/cn1/cnb2.htm
- cranialnerves at The Anatomy Lesson by Wesley Norman (Georgetown University) (V)
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