Maxillary Tuberosity Of The Maxilla, Lateral View

Description

Maxillary tuberosity forms the posteroinferior prominence of the maxilla at the terminal end of the alveolar process, immediately posterior to the socket region of the third molar. From a lateral perspective, the rounded contour sits inferior to the posterior wall of the maxillary sinus and anterior to the pterygomaxillary fissure, with the adjacent infratemporal surface angling posteriorly toward the pterygoid plates. Superiorly, the maxilla transitions toward the zygomatic process and the facial surface, while inferiorly the alveolar crest and residual alveolar ridge define the dental-bearing border. A compact landmark. Clinically, this region matters every time you work behind the last maxillary molar. The posterior superior alveolar nerves and vessels course on or near the posterior maxilla and can be affected during maxillary third molar extraction, tuberosity reduction, or posterior maxillary anesthesia, and the thin bone between the tuberosity and the maxillary sinus explains why oroantral communication and sinus membrane perforation remain real concerns in this zone. The fixed lateral viewpoint helps clarify how little bone can separate the distal alveolus from the posterior sinus wall, and it emphasizes the broad, cancellous nature of the tuberosity that predisposes to tuberosity fracture when excessive force is applied during extraction. Dental anatomy courses and oral surgery training materials often need an isolated, orientation-faithful reference for teaching the pterygomaxillary region, maxillary tuberosity fractures, and the posterior limit of the alveolar process. Maxillofacial and implant publications can also pair this illustration with discussions of posterior maxillary augmentation, distal extension denture support, and surgical access near the pterygopalatine fossa. Anatomical accuracy verified by SciePro's Medical Advisory Board.