Anterior superior alveolar nerve

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Nerve: Anterior superior alveolar nerve
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Distribution of the maxillary and mandibular nerves, and the submaxillary ganglion.
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Latin rami alveolares superiores anteriores nervi maxillaris, ramus alveolaris superior anteriores
Gray's p.891
Innervates dental alveolus

The anterior superior alveolar branch (anterior superior dental branch), of considerable size, is given off from the maxillary nerve just before its exit from the infraorbital foramen; it descends in a canal in the anterior wall of the maxillary sinus, and divides into branches which supply the incisor and canine teeth.

It communicates with the middle superior alveolar branch, and gives off a nasal branch, which passes through a minute canal in the lateral wall of the inferior meatus, and supplies the mucous membrane of the anterior part of the inferior meatus and the floor of the nasal cavity, communicating with the nasal branches from the sphenopalatine ganglion.

Dental considerations for this nerve are important. The anterior superior alveolar usually innervates all anterior teeth, loops backwards to join the middle superior alveolar nerve to form the superior dental plexus.

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This article incorporates text from a public domain edition of Gray's Anatomy.