Tongue Tie: What an Assessment Actually Involves

Tongue tie is one of the most contested topics in infant feeding. Some families are told it explains everything and are booked for a release within days. Others raise it and are dismissed without anyone looking in the baby’s mouth. Both extremes leave parents without a useful answer.

Here’s what a proper assessment looks like, and what the evidence does and doesn’t support.

What it is

A tongue tie, or ankyloglossia, is a frenulum, the band of tissue under the tongue, that restricts how the tongue moves. Everyone has a frenulum. The question is never whether it exists but whether it limits function.

That distinction is the whole issue. A frenulum that looks dramatic may allow perfectly normal movement, and a frenulum that’s barely visible may restrict it significantly. This is why photographs sent to a practitioner, or an assessment based on appearance alone, aren’t enough.

Worth knowing: function is what matters, not appearance. The question isn’t what the frenulum looks like but whether your baby can lift, extend and cup their tongue well enough to feed effectively and comfortably.

Signs that warrant an assessment

In your baby: – Difficulty latching, or repeatedly sliding off the breast – Clicking sounds during feeding – Milk leaking from the corners of the mouth – Feeds that never seem to end, or that end in frustration – Poor weight gain despite frequent feeding – Excessive gassiness or very unsettled feeding – Difficulty with bottles as well as the breast

In you: – Persistent nipple pain beyond the first two weeks – A nipple that comes out creased, flattened or wedge-shaped – Cracked or damaged nipples that don’t heal – Recurrent blocked ducts or mastitis – Supply dropping despite frequent feeding

None of these confirm a tongue tie on their own. Every one of them has other possible causes, most commonly positioning and latch depth, which is exactly why the assessment matters.

What an assessment involves

A proper assessment takes time and has four parts.

Feeding history. What’s happening, when it started, how it’s changed, weight trend, what you’ve already tried.

Observation of a full feed. How your baby latches, sustains the latch, transfers milk, coordinates sucking, swallowing and breathing, and what your nipple looks like afterwards. Most of the useful information is here.

Oral assessment. Looking at and gently feeling inside your baby’s mouth to evaluate tongue elevation, extension, lateral movement, cupping and the strength and rhythm of the suck, as well as the palate and lip mobility.

Positioning trial. Trying different positions and latch adjustments to see how much of the difficulty resolves without any procedure at all. This step is frequently skipped and it matters, because a substantial proportion of feeding problems attributed to tongue tie improve with positioning changes.

Where the evidence sits

This is worth being honest about, because the confident claims online run ahead of the research.

Frenotomy, the release procedure, has reasonable evidence for reducing maternal nipple pain in babies with a clear anterior tongue tie and genuine functional restriction. That’s the strongest finding.

Evidence for improved breastfeeding outcomes more broadly is weaker and less consistent, and diagnosis rates have risen far faster than the underlying condition plausibly has. Posterior tongue tie in particular is diagnosed far more often than the evidence supports, and there’s no agreed diagnostic standard for it.

The practical implication: not every restricted frenulum needs releasing, and a release should follow a functional assessment rather than a photograph or a checklist. If someone recommends a procedure without watching your baby feed, that’s a reason to seek a second opinion.

It’s also worth knowing that aftercare protocols involving aggressive stretching exercises are debated and not universally recommended. Ask whoever performs a release what their aftercare guidance is and what it’s based on.

What happens after an assessment

If restriction is limiting feeding, I’ll explain what I found and refer you to an appropriate provider for assessment for release. In Ontario this is usually a physician, dentist or nurse practitioner with specific training.

If positioning and latch changes resolve the problem, which happens often, you leave with those changes practised and a plan, and no procedure.

Either way, feeding support afterwards matters. A release doesn’t automatically teach a baby a new feeding pattern, and babies who have compensated for weeks often need help learning a deeper latch. Follow-up is part of the work, not an optional extra.

Getting a proper look

If you’re stuck between being told everything is fine and being told your baby needs a procedure immediately, a thorough functional assessment is what resolves it.

In a consultation I take a full history, watch a complete feed, assess your baby’s oral function, and try positioning changes with you before drawing any conclusion. You get a clear explanation of what I found, a written plan, a referral if one is warranted, and a week of follow-up messaging.

I see families at home across Kanata, Barrhaven, Orléans, Stittsville, Riverside South, Findlay Creek, Manotick Village, Hintonburg, The Glebe and Aylmer, and virtually across Canada.

Related questions

Can you diagnose a tongue tie from a photo?

No. Appearance doesn’t predict function, and a frenulum that looks significant may allow entirely normal tongue movement. An assessment needs a feed observed and the baby’s oral function evaluated in person.

Does every tongue tie need to be released?

No. Release is considered when there’s genuine functional restriction affecting feeding, and many feeding difficulties attributed to tongue tie improve with positioning and latch changes alone.

Will a release fix breastfeeding immediately?

Not always. The evidence is strongest for reducing nipple pain where there’s a clear restriction. Babies who have compensated for weeks often need feeding support afterwards to learn a deeper latch.

Who performs a frenotomy in Ontario?

Usually a physician, dentist or nurse practitioner with specific training. An IBCLC assesses function and refers, rather than performing the procedure.