Infratemporal Surface Of The Maxilla, Lateral View

Description

Maxillary infratemporal surface anatomy dominates this lateral skull view, emphasizing the posterior aspect of the maxilla that forms the anterior wall of the infratemporal fossa. The maxillary tuberosity sits posterior to the last molar region of the alveolar process, with its roughened surface oriented posteriorly and laterally toward the pterygoid process of the sphenoid. Superiorly, the posterior wall of the maxillary sinus contributes to this surface, while medially the contour approaches the pterygomaxillary fissure, a vertical cleft leading into the pterygopalatine fossa. Bony relationships are read from lateral to medial, with the infratemporal surface receding behind the zygomaticomaxillary region and the dental arcade. Posterior maxillary access lives or dies by this anatomy. The infratemporal surface and maxillary tuberosity lie in the corridor for the posterior superior alveolar neurovascular bundle as it enters foramina on the posterior maxilla, a practical landmark when teaching posterior superior alveolar nerve blocks and when anticipating bleeding during maxillary molar extraction. Thin bone over the maxillary sinus and the proximity to the pterygomaxillary fissure also explain why tuberosity fractures can complicate extractions, and why posterior spread of infection may track toward the infratemporal or pterygopalatine spaces. Orientation is unambiguous. The fixed lateral perspective makes the posterior maxillary contour, sinus boundary, and deep fossa relationships easier to localize than in a frontal facial view. Dental anatomy courses, oral and maxillofacial surgery lectures, and ENT teaching on maxillary sinus approaches can all drop this illustration directly into slides to support discussions of molar extraction risk, anesthetic technique, and deep facial space infection pathways. Anatomical accuracy verified by SciePro's Medical Advisory Board.