frenulum of lower lip frenulum of lower lip the inferior labial frenulum, or frenulum labii inferioris (latin, meaning "little bridle of the lower lip"). is the frenulum connecting the lower gums with the lower lip. frenulum of lower lipmouth illustration (frenulum of lower lip visible at center bottom.)detailsidentifierslatinfrenulum labii inferioris orista98a05.1.01.011ta22787fma59822anatomical terminology function the inferior labial frenulum, alongside the superior labial frenulum, provides stability to the upper and lower lip. medical conditions absence of the inferior labial frenulum and/or the lingual frenulum is associated with the classical and hypermobility types of ehlers-danlos syndrome, but can also be absent in those without any underlying medical conditions. tearing of the inferior labial frenulum may occur after being bit, especially after a fall, resulting in bleeding and pain. treatment can normally be done at home, and usually heals on its own within 3–4 days. tearing of the inferior labial frenulum may be a sign of domestic abuse.