The lower jaw, also known as the mandible, is the largest and strongest bone in the human face. It holds the lower teeth and plays a crucial role in chewing and speaking. The mandible is connected to the skull at the temporomandibular joint (TMJ), allowing for movement. The lower jaw consists of two main parts: the body and the ramus. The body is the horizontal portion that supports the teeth, while the ramus extends upward on each side, connecting to the skull. Proper alignment and function of the mandible are essential for overall oral health.