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She added evidence for further treatment, such as cutting a tight frenulum, was slim and generally a last course of action, as sometimes even significant cases do not affect feeding - so mothers and their babies must be looked at individually.

When the frenulum is cut, it could damage nerves, salivary glands, and ducts that lead to salivary glands, says Soroush Zaghi, an otolaryngologist and sleep surgeon, as well as the medical director of The Breathe Institute in California, where Kardashian is a patient.

In infancy, a type of tongue-tie where the frenulum attaches all the way to the front of the tongue and severely restricts its movement has been treated for hundreds of years.

Nonetheless, Zaghi advocates for a surgery that cuts through the frenulum and sometimes into the muscle.

Cutting the frenulum could even make sleep worse, Baldassari says.