Upper jaw (body of maxilla)

The body is the central and largest portion of the maxilla. It gives support to all four processes and houses the most prominent paranasal sinus - the maxillary sinus (Read more!).


Anatomical landmarks

Both maxillae fuse in the midline to form the upper jaw. The fusion of both bones creates a sharp, thin midline projection called the anterior nasal spine. It is found in the midline at the inferior margin of the nasal aperture, and it is the anterior point of the upper jaw that serves as a cephalometric landmark.

The maxillary body has the following four surfaces

The greater palatine groove is found posteriorly at the region where the nasal surface connects with the infratemporal surface. It is an oblique sulcus that transmits the greater palatine nerve and vessels.