Either of the superior alveolar nerve branches of the maxillary nerve of the second division of the trigeminal nerve (rami alveolares superiores posteriores, ramus alveolaris superior medius, and ramus alveolaris superior anteriores). Supplies sensory innervation to the maxillary molars, the premolars, or the canine and incisors, respectively. The inferior alveolar nerve (nervus alveolaris inferior) is the largest branch of the mandibular nerve of the third division of the trigeminal nerve or cranial nerve V, which supplies sensory innervation to the mandibular teeth, lower lip, and chin.