What is the maxillary nerve?
The maxillary nerve is the second division of the trigeminal nerve and is also known as the V2 division. This nerve is the middle division of the trigeminal nerve and is attached to the distal convex border of the trigeminal ganglion. The maxillary nerve exits from the cranial cavity through the foramen rotundum.
What is the buccal nerve?
The buccal nerve is the only sensory branch of the anterior mandibular division of the trigeminal nerve. It innervates the major part of the buccal mucosa, the inferior buccal gingiva in the molar area, and the skin above the anterior part of the buccinator muscle.
What is the alveolar nerve?
The superior alveolar nerves are all branches of the maxillary nerve, which is the second branch of the trigeminal nerve. The inferior alveolar nerve, which is small in length, is a branch of the mandibular nerve, which is the third branch of the trigeminal nerve.
What does the mandibular nerve do?
The mandibular nerve supplies both motor and sensory information, which means it’s linked to movement and senses. One of its most essential functions is controlling the movements of the muscles that allow you to chew. These include the masseter, the lateral and medial pterygoids, and the temporalis muscle.
What happens if the maxillary nerve is damaged?
As a branch of the trigeminal nerve, the maxillary nerve is often implicated in trigeminal neuralgia, a rare condition characterized by severe pain in the face and jaw. 1 In addition, lesions of this nerve can cause intense hot and cold sensations in the teeth.
What nerve Innervates maxillary molars?
The posterior superior alveolar nerve innervates the second and third maxillary molars, and two of the three roots of the maxillary first molar (all but the mesiobuccal root).
Where is the buccal nerve located?
The buccal nerve (long buccal nerve) is a nerve in the face. It is a branch of the mandibular nerve (which is itself a branch of the trigeminal nerve) and transmits sensory information from skin over the buccal membrane (in general, the cheek) and from the second and third molar teeth.
What nerve Innervates the upper teeth?
The branches of the maxillary nerve supply the upper teeth, the nasal cavity and palate, and the upper part of the cheek.
What causes inferior alveolar nerve?
Introduction. Causes of inferior alveolar nerve (IAN) injury include local anesthetic injections, third molar surgery (TMS), implants, endodontics, ablative surgery, trauma, and orthognathic surgery.
What happens if mandibular nerve is damaged?
Injury to these two branches of the mandibular division of the trigeminal nerve may result in altered sensation associated with the ipsilateral lower lip or tongue or both and may include anaesthesia, paraesthesia, dysaesthesia, hyperalgesia, allodynia, hypoaesthesia and hyperaesthesia.
Where does the nerve supply the stylohyoid muscle?
The stylohyoid muscle has vascular supply from the lingual artery, a branch of the external carotid artery. Nerve supply. A branch of the facial nerve (CN VII) innervates the stylohyoid muscle. Variation. It may be absent or doubled, lie beneath the carotid artery, or be inserted into the omohyoid, or mylohyoid muscles. Function
Where does the stylohyoid lie in the body?
Throughout its course, stylohyoid has several important relations: Medial (deep) – external carotid artery, internal carotid artery, accessory nerve (CN XI) and hypoglossal nerve (CN XII). As the stylohyoid muscle is varied, it can also lie medially to the external carotid artery.
Where does the nerve for mylohyoid come from?
Mylohyoid innervation is supplied by the nerve to mylohyoid muscle. This nerve is a branch of the inferior alveolar nerve, which in turn comes from the mandibular nerve. Thus the main source for mylohyoid innervation is the mandibular nerve (CN V3).
How is the stylohyoid muscle involved in tongue retraction?
Contraction of the stylohyoid muscle results in elevation and retraction (posterior movement) of the hyoid bone. As the muscle takes part in forming the floor of the mouth, this action also results in tongue retraction and lengthening the floor of the mouth.