The mandible is the strongest and largest bone of the face. The bones of the cranial base allow articulation with the first cervical vertebrae, as well as with the mandible to form the temporomandibular joint. The calvarium is comprised of the frontal, occipital and two parietal bones, and the cranial base is comprised of the frontal, sphenoid, ethmoid, occipital, parietal and temporal bones. The cranium can be divided further in to the calvarium and the cranial base. Neurovascular structures enter and leave the cranium through the cranial foramina. The cranium encloses and protects the brain whereas, the bones of the facial skeleton provides support to facial soft tissues. The 22 bones of the skull can be divided in to two main categories: the cranium and the facial skeleton. They are a type of fibrous joint, which are immovable. The bones of the head meet at joint lines called sutures. The bones of the head form a protective cavity around the brain.
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