Frenulum of lower lip - Oral cavity - Oral cavity - e-Anatomy
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Frenulum of lower lip

Frenulum labii inferioris

  • Synonym: Frenulum of inferior lip

Definition

Muhammad A. Javaid

The frenulum of lower lip (inferior labial frenulum) is a midline mucosal fold connecting the inner surface of the lower lip to the mandibular gingiva. It helps stabilise the lower lip and limits excessive movement.

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References

  • Smile Care Plymouth (no date) What is the upper lip frenulum and when should it be treated? Available at: Smile Care Plymouth (Accessed: 18 May 2026).

  • Cleveland Clinic (no date) Frenum (mouth frenulum): What it is, function & anatomy. Available at: Cleveland Clinic (Accessed: 18 May 2026).

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