Buccal nerve
Buccal nerve | |
---|---|
Details | |
From | mandibular nerve |
Innervates | lateral pterygoid muscle and cheek |
Identifiers | |
Latin | nervus buccalis |
TA98 | A14.2.01.073 |
TA2 | 6258 |
FMA | 53066 |
Anatomical terms of neuroanatomy |
The buccal nerve (long buccal nerve) is a sensory nerve of the face arising from the mandibular nerve (CN V3) (which is itself a branch of the trigeminal nerve). It conveys sensory information from the skin of the cheek, and parts of the oral mucosa, periodontium, and gingiva.
Structure
Origin
The buccal nerve is a branch of the anterior division of the mandibular nerve (CN V3). It is the only sensory branch of the anterior division.[1]
Course and relations
After branching from the anterior trunk of the mandibular nerve (CN V3), the buccal nerve passes between the two heads of the lateral pterygoid muscle,[2][3] underneath the tendon of the temporalis muscle.[3] It then passes anterior to the ramus of the mandible to first course deep to the masseter muscle, and finally[2] anteroinferiorly[1] upon surface of the buccinator muscle[2][1] before piercing this muscle.[1]
Communications
It connects with the
Distribution
The buccal nerve provides sensory innervation to the skin of the cheek, the
Clinical significance
Anesthesia
Buccal nerve block (long buccal nerve block) is indicated for procedures involving the mucosa adjacent to the posterior molar teeth, such as the placement of a rubber dam clamp. The injection site is distal and buccal to the third molar, with the needle penetrating 1-2mm as the nerve lies directly below the mucosa.[5] A buccal nerve block is carried out after an inferior alveolar nerve block for specific procedures, such as extraction of mandibular molar teeth.
Surgical damage
The buccal nerve may be damaged by surgical incisions near the external oblique ridge of the mandible.[3][4]
Additional images
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The nerves of the scalp, face, and side of neck.
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Infaorbital and buccal nerve. Superficial dissection. Lateral view.
References
- "Nerve, buccal." Stedman's Medical Dictionary, 27th ed. (2000). ISBN 0-683-40007-X
- Gray's Anatomy: The Anatomical Basis of Clinical Practice. (2005). ISBN 0-443-07168-3
- Specific
- ^ ISBN 978-0-7295-3752-0.
- ^ ISBN 978-0-323-39634-9.
- ^ PMID 7848999.
- ^ PMID 8909743.
- ISBN 9780323074131.
External links
- Anatomy figure: 27:03-03 at Human Anatomy Online, SUNY Downstate Medical Center
- MedEd at Loyola GrossAnatomy/h_n/cn/cn1/cnb3.htm
- lesson4 at The Anatomy Lesson by Wesley Norman (Georgetown University) (mandibularnerve)
- cranialnerves at The Anatomy Lesson by Wesley Norman (Georgetown University) (V)