abnormal mandibular nerve morphology abnormal mandibular nerve innervation pattern any changes in the placement, morphology or number of mandibular nerve fibers providing motor and sensory nerve supply from the auricle, the external acoustic meatus, tympanic membrane, temporal region, the cheek, the skin overlying the mandible, the anterior portion of the tongue, the floor of the mouth, lower teeth and gingiva and transmits motor information from the muscles of mastication, the mylohyoid muscle and digastric muscle and the muscles tensor tympani and tensor veli palatini MP:0014119