Inferior alveolar n

The inferior alveolar n. is a branch of the mandibular n. (CN V3).  It enters the mandibular foramen on the inner surface of the ramus of the mandible and supplies sensory innervation to the mandibular teeth.  One of its terminal branches, the mental n., exits the mental foramen of the chin and supplies sensory innervation to the skin of the chin and the body of the mandible.