Buccinator

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Original Author(s): Max Bidewell
Last updated: January 18, 2023
Revisions: 7

Original Author(s): Max Bidewell
Last updated: January 18, 2023
Revisions: 7

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The buccinator is an oral muscle of facial expression. It is located between the mandible and maxilla, deep to the other muscles of the face.

  • Attachments – Originates from the maxilla and mandible. The fibres run in an inferomedial direction, blending with the orbicularis oris muscle and the skin of the lips.
  • Actions – Pulls the cheek inwards against the teeth, preventing accumulation of food in that area.
  • Innervation – Buccal branches of the facial nerve.
  • Blood Supply – Buccal artery (branch of the maxillary artery)

Fig 1 – The main oral muscles of facial expression. Note how the fibres of buccinator and orbicularis oris blend togther