Anatomy and Course - The anterior superior alveolar nerve branches from the infraorbital nerve within the infraorbital canal. - It enters the canalis sinuosus and passes towards the nose before branching into innervating branches for the upper/maxillary incisor and canine teeth. - It usually innervates all the anterior teeth. - A nasal branch passes through a canal in the lateral wall of the inferior nasal meatus and innervates the mucous membrane of the nasal cavity. - The nasal branch also innervates the adjacent portion of the nasal septum. - The nerve participates in the formation of the superior dental plexus. - It loops posteriorly to communicate with the middle superior alveolar nerve. - The nasal branch communicates with nasal branches of the sphenopalatine ganglion.

Communications - The anterior superior alveolar nerve communicates with the middle superior alveolar nerve. - It also communicates with the nasal branches of the sphenopalatine ganglion.

Related Terms - Anterior superior alveolar arteries - Alveolar nerve (Dental nerve) - Superior alveolar nerve (Superior dental nerve) - Middle superior alveolar nerve (Middle superior dental nerve) - Posterior superior alveolar nerve (Posterior superior dental nerve)

References - Jones, Frederic Wood (July 1939). The anterior superior alveolar nerve and vessels. Journal of Anatomy. 73 (Pt 4): 583–591. - Standring, Susan (2020). Gray's Anatomy: The Anatomical Basis of Clinical Practice (42nd ed.). New York. p. 656. - Gray, Henry (1918). Gray's Anatomy (20th ed.). p. 891.

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