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Buccal Nerve
Nervous System

Buccal Nerve

Nervus buccalis

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Quick Facts

Origin: Anterior division of the mandibular nerve.

Course: Runs between the heads of the lateral pterygoid muscle, deep to the masseter, and into the cheek, superficial to the buccinator muscle.

Branches: None.

Supply: Conveying general sense fibers from the skin of the cheek and the mucosa deep to the buccinator muscle.

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Origin

The buccal nerve is a branch of the anterior division of the mandibular nerve. It originates deep to the lateral pterygoid muscle, inferior to the foramen ovale in the deep part of the infratemporal fossa. The buccal, anterior deep temporal, and the nerve to the lateral pterygoid muscle all branch from the anterior division of the mandibular nerve close together and more anteriorly than the other branches.

The sensory fibers of the buccal nerve have cell bodies located in the trigeminal ganglion.

Course

From its origin, the buccal nerve runs laterally, through the two heads of the lateral pterygoid muscle. It continues anteroinferiorly, running deep to the tendon of temporalis and the masseter muscles. Once past the masseter muscle, the buccal nerve continues anteriorly into the cheek, superficial to the buccinator muscle. It gives off fibers to the skin of the cheek while other fibers dive deep to penetrate the buccinator muscle and reach the mucosal lining of the cheek.

Branches

There are no named branches.

Supplied Structures

The buccal nerve is a sensory nerve. It conveys general sense fibers from the skin of the cheek and the mucosal lining of the cheek deep to the buccinator muscle. It also conveys sense information from the mucosal lining of the oral vestibule and gingiva lateral to mandibular molars.

Learn more about this topic from other Elsevier products

Buccal Nerve

ScienceDirect image

The BN, commonly referred to as the long buccal nerve by dental clinicians, is a sensory nerve that emerges between the two heads of the lateral pterygoid muscle and then descends toward the cheek along the tendon of the temporalis muscle.

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Complete Anatomy

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Complete Anatomy