What is the anatomy of somatosensory relevant to burning mouth syndrome (BMS)?

Updated: Apr 15, 2021
  • Author: Vincent D Eusterman, MD, DDS; Chief Editor: Arlen D Meyers, MD, MBA  more...
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Somatosensory innervation is provided by the maxillary (V2) and mandibular (V3) branches of the trigeminal nerve and the glossopharyngeal nerve (IX).

The V2 branch supplies the following:

  • Hard and soft palate

  • Mucosa of the maxillary vestibule

  • Upper lip

  • Maxillary teeth

  • Maxillary periodontal ligaments

  • Maxillary gingiva

The V3 branch supplies the following:

  • Buccal mucosa

  • Anterior two thirds of the tongue (lingual branch)

  • Mandibular teeth

  • Mandibular periodontal ligaments

  • Mandibular gingiva

  • Anterior mandibular vestibule

  • Lower lip

The glossopharyngeal nerve innervates the following:

  • Posterior third of the tongue

  • Posterior wall of the pharynx

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