The mandibular nerve is a branch of the trigeminal nerve, which supplies sensation to the lower face and jaw. Synonyms for the mandibular nerve include the third division, V3, or the mandibular branch of the trigeminal nerve. It is the largest of the three branches of the trigeminal nerve and contains both sensory and motor fibers. The mandibular nerve innervates the muscles that move the jaw, as well as the teeth, gums, and lower lip. Damage to the mandibular nerve can cause pain, numbness, and difficulty chewing or speaking. Synonyms for the mandibular nerve are commonly used in medical literature and studies.