The lower jawbone, the largest bone of the face, is the:

The mandible is the lower jawbone and the largest, strongest bone of the face. The maxillae form the upper jaw. Cosmetologists study the bones of the skull and face — including the mandible, maxillae, zygomatic (cheek) bones, nasal bones, and the cranial bones — because facial, scalp, and neck services interact with these structures and the muscles and nerves over them. Knowing the mandible as the lower jaw is part of the basic facial anatomy covered on the exam.