Canine Fossa Of The Maxilla, Lateral View

Description

Canine fossa of the maxilla lies on the anterior surface of the midface, just inferior to the infraorbital margin and lateral to the piriform aperture. From a lateral viewpoint, the concavity is seen superior to the alveolar process and anterior to the maxillary sinus, with the canine eminence forming a raised contour medially and the zygomatic process projecting posterolaterally. The infraorbital foramen typically sits superolateral to this depression, marking the exit of the infraorbital nerve and vessels as they course onto the face. Nearby dental landmarks include the roots of the maxillary canine and first premolar, which create subtle surface relief along the anterior maxillary wall. This region matters because the canine fossa corresponds to the thinnest bony portion of the anterior maxilla over the maxillary sinus, a relationship that explains both tenderness patterns in acute maxillary sinusitis and potential pathways for odontogenic infection to spread into the canine space of the face. Surgeons also use the canine fossa as an entry point for the classic Caldwell-Luc approach to the maxillary sinus, where proximity to the infraorbital nerve and the roots of the canine and premolars shapes incision placement and limits aggressive bony removal. Hard tissue landmarks are unforgiving. The fixed lateral perspective helps clarify the depth of the fossa relative to the infraorbital foramen and the anterior sinus wall, relationships that are easy to misjudge when teaching only from frontal skull views. Use this illustration in dental anatomy and head and neck gross anatomy courses, in ENT and oral and maxillofacial surgery teaching files discussing maxillary sinus access, and in radiology primers that correlate surface anatomy with CT findings of anterior maxillary wall defects or periapical disease. Anatomical accuracy verified by SciePro's Medical Advisory Board.