11/01/2026
Lip ties (and their pictures on social media) drive me clinically nuts, because there is so much misinformation about who actually has one
I am the first to refer to the appropriate health care provider (pediatric dentist or ENT) when a true lip tie is not allowing proper function of the lips and is impacting the success of digestion or breastfeeding. But let’s understand a few things:
✏️According to a 1994 study by Flinck, who looked at >1000 babies, 77% of them had a frenulum that inserted “low” on to the gumline. A further 17% had a frenulum that inserted into the palate. So 94% of babies have a really low gum insertion - that is NOT the definition of a lip tie. Having a low set frenulum cannot be the only criteria used for release
✏️There is currently no published criteria defining a normal frenulum vs a lip tie. That does not mean a lip shouldn’t be addressed when function is being impacted. But that band between lip and gums is supposed to be there to some extent to help anchor your lips to your face for proper movement and facial development
✏️Lip tie, when it is present, can certainly get in the way of a normal latch. A lip tie may cause increased air intake (contributing to reflux and gas), breast pain from the lips gripping too tightly to the breast, contribute to lip blisters muscle compensations, or not allow the baby to be able to maintain the latch through the whole feeding. While the lips are important for feeding, I’m more concerned about the tongue for obtaining a normal latch. The lip often compensates for the tongue
True diagnosis of lip tie is all about anatomy (what does it look like), physiology (what does it do), and symptoms (what is it causing). A lip tie will always impact function of the lip by restricting its expected movement. The upper lip should be soft and move to spread and pucker the lips without difficulty. The upper lip should play a passive role when breastfeeding, gently rounding to maintain the seal at the breast so milk doesn’t leak out and not gripping the breast
You cannot tell if it’s tied from a picture, a dynamic, hands on assessment is needed.