A frenum is a fold of tissue that connects the lip or cheek or the gum or the underside of the tongue to the floor of the mouth.
If the attachment to the gum causes the gums to recede, it may need to be removed surgically in an operation called a frenectomy.
If the attachment under the tongue restricts the movement of the tongue (“tongue tied”) it can interfere with breast feeding and speech development. A frenectomy may be performed to allow the tongue to extend further.

This page was last updated at 12:24PM on May 4, 2020.