Tongue-Tie in Babies: Signs, Feeding Problems, and Treatment

If breastfeeding hurts more than it should, or your baby can't get a full latch no matter how the lactation consultant adjusts things, tongue-tie might be the reason nobody has mentioned yet.

Tongue-tie, or ankyloglossia, affects roughly one in twenty babies. It's usually harmless. Sometimes it isn't, and catching it early makes feeding, speech, and even dental development easier down the road.

Here's what tongue-tie actually is, the signs worth watching for, and when it's time to talk to a dentist.

What Is Tongue-Tie (Ankyloglossia)?

Tongue-tie happens when the thin strip of tissue under the tongue, called the lingual frenum, is shorter or tighter than usual. That tissue normally loosens before birth so the tongue can move freely. When it stays tight, the tongue can't lift, extend, or move side to side the way it needs to for feeding and, later, for speech.

Ankyloglossia is often described by how far back the tight tissue sits. An anterior tongue-tie is attached near the tip of the tongue and is usually easy to spot. A posterior tongue-tie sits further back, under a layer of mucosa, and can be missed on a quick look because the tip of the tongue still appears normal.

It's something babies are born with, not something that develops afterward. Some cases are barely noticeable. Others restrict movement enough to interfere with breastfeeding from day one.

Signs of Tongue-Tie in Babies

Tongue-tie shows up differently depending on how much movement is restricted. Watch for:

• Trouble latching or staying latched during breastfeeding

• Clicking sounds while feeding

• Slow weight gain despite frequent feeds

• Gassiness or reflux from swallowing air during feeds

• A heart-shaped or notched look at the tip of the tongue

• Difficulty lifting the tongue past the lower front teeth

• Sore, cracked, or misshapen nipples in a breastfeeding parent

Bottle-fed babies can have tongue-tie too, though the feeding problems are often less obvious early on. Some babies show no symptoms as infants, and the restriction only becomes clear once speech sounds like t, d, l, and r start developing around age two or three.

How Tongue-Tie Is Diagnosed

A dentist, paediatrician, or lactation consultant can usually diagnose tongue-tie with a simple visual exam and by checking how far the tongue lifts and extends. No X-ray is needed. If you've raised feeding struggles with your doctor and been told to wait it out, it's reasonable to ask specifically about tongue-tie, often around the same time as your child's first dental visit.

Some clinicians also use a structured scoring tool, checking how far the tongue lifts, how it moves side to side, and how it looks when the baby cries. This gives a more consistent picture than a quick visual check alone, especially for a posterior tongue-tie that's easy to miss.

Treatment Options for Tongue-Tie

Not every tongue-tie needs treatment. Mild cases that aren't affecting feeding, speech, or comfort are often just monitored. When treatment is recommended, the procedure is called a frenotomy or frenectomy, depending on how the tissue is released.

Method	How It's Done	Anesthesia	Recovery	Best For
Frenotomy (scissors)	Quick snip of the thin frenum	Usually none for newborns	Minutes; feeding often improves same day	Simple, thin tongue-tie in infants
Laser frenectomy	Frenum released with a dental laser	Rarely needed for infants	Same day, minimal bleeding	Slightly thicker tissue in infants or toddlers
Surgical frenectomy	Frenum released and occasionally stitched	Local anaesthetic	A few days	Thicker or more complex tongue-tie in older children

After a frenectomy, many providers recommend gentle tongue stretches for a week or two to keep the tissue from reattaching as it heals. Your dentist will show you exactly how to do the stretches before you leave the appointment, and most parents find it becomes routine within a few days.

For most newborns, the procedure takes less than a minute, and many babies feed comfortably right afterward. Some fussiness for a day or two is normal. Serious complications are rare.

What Happens If Tongue-Tie Isn't Treated?

Left untreated, a significant tongue-tie can lead to ongoing feeding difficulties, slower weight gain, speech delays with certain sounds, and changes to how the palate develops, since the tongue helps shape the roof of the mouth as a child grows. It can also contribute to mouth breathing, which carries its own effects on jaw and dental development.

When to Talk to a Dentist About Tongue-Tie

If feeding is a daily struggle, weight gain has stalled, or your child is approaching preschool age and still struggling with certain speech sounds, it's worth a dental evaluation. Many GTA families first raise tongue-tie concerns during infancy, around the same stretch covered in our guide to baby teething, since feeding and comfort issues often overlap.

Frequently Asked Questions

Does tongue-tie go away on its own?

Mild tongue-tie can loosen slightly as a baby grows, but the tissue itself doesn't fully resolve without treatment. Whether treatment is needed depends on how much it's affecting feeding or, later, speech.

Is a frenectomy painful for a baby?

Most infant frenotomies are done without anaesthetic, since the frenum has very few nerve endings and little blood supply at that age. Babies often cry briefly from being held still, not from pain, and settle quickly once feeding resumes.

Can tongue-tie affect a child's teeth later?

Yes, in some cases. A tight frenum can pull on the lower front teeth or affect how the tongue rests against the palate, which can influence bite and jaw development over time.

Will my baby need a specialist for treatment?

Many general and pediatric dentists treat infant tongue-tie in-office. More complex cases, or cases involving both a tongue-tie and a lip-tie, sometimes get referred to an oral surgeon or specialist.

If you're noticing feeding struggles or want a second opinion on a possible tongue-tie, our team at Lornview Dental sees infants and children throughout the GTA. Schedule an appointment with Lornview Dental.