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Head and Neck
Published in Bobby Krishnachetty, Abdul Syed, Harriet Scott, Applied Anatomy for the FRCA, 2020
Bobby Krishnachetty, Abdul Syed, Harriet Scott
Mandibular (V3) – sensory + motorExits via the foramen ovaleSensory branches include auriculotemporal, buccal and lingual nervesMotor branches include masseteric and lateral pterygoid nervesMixed (motor + sensory) branches include inferior dental nerveSupplies ear, temple, jaw, lower lips and teeth
Mandible Fractures
Published in Jeffrey R. Marcus, Detlev Erdmann, Eduardo D. Rodriguez, Essentials of CRANIOMAXILLOFACIAL TRAUMA, 2014
J. Alex Kelamis, Eduardo D. Rodriguez
Two groups of muscles impart movement to the mandible: the muscles of mastication (temporalis, masseter, lateral pterygoid, and medial pterygoid) and the suprahyoid muscles (digastric, mylohyoid, and geniohyoid). Although the stylohyoid muscles are technically part of the suprahyoid muscles, they do not attach to the mandible and therefore impart no direct movement for the mandible. All muscles of mastication are innervated by branches of the trigeminal mandibular nerve. The temporalis muscle is innervated by the deep temporal branches of the mandibular nerve; this muscle elevates the mandible. In addition, its posterior fibers aid in retrusion of the mandible. The masseter is innervated on its deep surface by the masseteric nerve; it elevates the mandible, along with slight concomitant protrusion. Its deep fibers also aid in retrusion. The lateral pterygoid muscle is innervated on the deep surface by the lateral pterygoid nerve and consists of superior and inferior heads. Together, the heads both protrude and depress the mandible. When acting alternately, they produce a grinding side-to-side movement of the mandible. The medial pterygoid muscle is innervated by the medial pterygoid nerve and consists of a deep and a superficial head. Together, the heads help elevate and protrude the mandible. When acting alternately, they produce a grinding side-to-side movement. When acting alone, they are capable of protruding the ipsilateral side of the mandible. The suprahyoid muscles elevate the hyoid and the floor of the mouth and, with the exception of the stylohyoid muscles, allow slight depression of the mandible. The digastric muscle is formed by anterior and posterior bellies. The anterior belly is innervated by the mylohyoid branch of the trigeminal nerve and attaches to the digastric fossa of the mandible. The posterior belly is innervated by the facial nerve and attaches to the mastoid notch. The mylohyoid muscle is innervated by the. mylohyoid nerve of the trigeminal nerve. The stylohyoid muscle is innervated by the facial nerve. The geniohyoid is innervated by the hypoglossal nerve from C1.
Chronic orofacial pain animal models - progress and challenges
Published in Expert Opinion on Drug Discovery, 2018
Heitor G. Araújo-Filho, Erik W.M. Pereira, Adriana Rolim Campos, Lucindo J. Quintans-Júnior, Jullyana S.S. Quintans
The TMJ region is mainly innervated by branches of the auriculotemporal, masseteric, deep temporal and lateral pterygoid nerves from the mandibular division of the TN [146]. Thus, it is a trigger region for the induction of inflammatory and painful processes that are long lasting and of difficult clinical and pharmacological management.