Tongue Tie in Breastfeeding: Signs, Treatment & Evidence

By Steve Kalvie

Founder · Researcher · Ex-Alibaba/Syngenta

Published: Sep 7, 2026

Updated: Sep 2026 · 9 min read

What is tongue tie, and does it matter?

You've probably heard the term "tongue tie" thrown around in parenting groups. Some moms say it ruined their breastfeeding journey. Others say it's overdiagnosed and an unnecessary procedure. Who's right?

The answer is somewhere in the middle. Tongue tie is real — about 4–10% of newborns have some degree of it — but not every tongue tie causes breastfeeding problems, and not every breastfeeding problem is caused by tongue tie. The key is knowing when it matters and what to do about it.

What exactly is tongue tie?

Tongue tie (medically called ankyloglossia) is a condition where the frenulum — the thin band of tissue connecting the underside of the tongue to the floor of the mouth — is shorter, tighter, or thicker than usual. This restricts how far the tongue can move up, forward, and side to side.

There's a wide spectrum:

• Mild: Frenulum is slightly tight but tongue can still function normally
• Moderate: Frenulum restricts some movement, may affect feeding
• Severe: Frenulum is very short and thick, tongue can barely lift or extend

The Coryell classification (1–4) and the Hazelbaker Assessment Tool for Lingual Frenulum Function (HATLFF) are two systems providers use to grade tongue ties. But classification alone doesn't determine whether treatment is needed — functional impact is what matters.

How tongue tie affects breastfeeding

For effective breastfeeding, a baby needs to:

1. Latch deeply with a wide mouth (gaping to 120°+)
2. Draw the nipple far back into the mouth (to the junction of hard and soft palate)
3. Use a wave-like tongue motion to compress milk sinuses and draw milk out
4. Maintain suction without breaking seal

A tongue-tied baby may struggle with steps 2 and 3. If the tongue can't lift and extend properly, the nipple stays near the front of the mouth where it gets pinched between the tongue and hard palate. This causes:

• Nipple pain and damage — creased, flattened, or "lipstick" shaped nipples after feeds
• Poor milk transfer — baby feeds for long periods but doesn't get enough milk
• Slow weight gain — baby falls off growth curve
• Clicking sounds during feeds (suction breaking)
• Frequent feeding — baby is always hungry because transfer is inefficient
• Mastitis and clogged ducts — incomplete drainage leads to recurrent problems
• Early weaning — pain and frustration lead many moms to stop breastfeeding earlier than planned

Signs that suggest tongue tie

In the baby

• Heart-shaped or notched tongue tip when the tongue is extended (the frenulum pulls the middle down)
• Can't lift tongue to the roof of the mouth when crying
• Can't extend tongue past the lower lip or gums
• Clicking or smacking sounds during feeds
• Chewing or biting the nipple instead of sucking
• Fussy at the breast, pulling on and off
• Feeds take 45+ minutes and baby still seems hungry
• Poor weight gain or weight loss beyond the normal 7% in the first week
• Gumming or blanching of the nipple

In the mom

• Nipple pain that persists beyond the first week, or gets worse instead of better
• Nipple damage — cracks, blisters, creases, or lipstick-shaped nipples
• Recurrent clogged ducts or mastitis from incomplete drainage
• Feeling like baby is "chewing" rather than sucking
• Baby falls asleep quickly then wakes hungry 20 minutes later
• Pumping yields more milk than baby gets at the breast (pump is more efficient than baby's tongue)

How is tongue tie assessed?

A proper tongue tie assessment goes beyond just looking at the frenulum. An experienced IBCLC or pediatrician will:

1. Observe a full feed — watching latch, sucking pattern, milk transfer, and baby's behavior
2. Examine the tongue — range of motion, appearance, frenulum attachment point
3. Use a functional assessment tool — like the HATLFF, which scores 12 aspects of tongue function (appearance and suction)
4. Check for lip tie — about 30% of tongue-tied babies also have a tight upper lip frenulum
5. Assess weight gain and diaper output to measure milk transfer
6. Rule out other causes — prematurity, low tone, structural issues, maternal oversupply or undersupply

The ABM (Academy of Breastfeeding Medicine) 2021 Position Statement on Ankyloglossia emphasizes that functional impairment, not appearance, should drive treatment decisions. A baby with a "severe" tongue tie on appearance who feeds well may not need a procedure. A baby with a "mild" tongue tie who can't transfer milk may benefit significantly.

Treatment options: frenotomy vs frenuloplasty

Frenotomy (frenectomy)

This is the most common procedure — a quick snip of the frenulum with sterile scissors. It's usually done in-office without anesthesia (or with topical numbing gel). The procedure takes 10–30 seconds, and most babies can breastfeed immediately afterward.

Pros:

• Quick, minimal bleeding
• Low cost (often $300–$800 without insurance)
• Immediate feeding improvement in many cases
• Can be done by pediatrician, ENT, dentist, or some IBCLCs (depending on state regulations)

Cons:

• May not fully release thick or posterior ties
• Some risk of reattachment (5–10%)
• Baby may be fussy for 24–48 hours

Frenuloplasty (laser revision)

This uses a laser (usually CO2 or diode) to reshape the frenulum, sometimes including sutures. It's typically done by a dentist who specializes in tongue ties.

Pros:

• More precise for thick or posterior ties
• Less bleeding (laser seals blood vessels)
• Lower reattachment rate in some studies
• May be less painful post-procedure

Cons:

• More expensive ($600–$1,500+)
• Requires a specialist (not all areas have one)
• Some evidence suggests cold steel (scissors) heals faster than laser in animal studies
• Marketing can be aggressive — not all "laser dentists" have equal training

What does the evidence say?

The ABM 2021 statement notes that both scissors and laser are effective, and there are no published studies directly comparing surgical instruments for tongue tie release. The choice often comes down to provider expertise, cost, and the type of tie.

Success rates for frenotomy in improving breastfeeding range from 60–90% in studies, but this depends heavily on:

• Whether the assessment was accurate (was it really tongue tie causing the problem?)
• Whether post-release feeding support was provided
• The baby's age (younger babies tend to adapt faster)
• Whether bodywork (chiropractic, craniosacral, occupational therapy) was part of the plan

The critical post-release period

Here's what many providers miss: the release is only half the work. After a frenotomy, the tongue is free but the baby's muscle memory and feeding patterns haven't changed. Without targeted support, many babies don't improve as much as expected.

What to do after release

1. Breastfeed immediately — most babies feed better right away, and feeding helps soothe
2. Do tongue exercises — your provider should show you specific exercises to prevent reattachment and build tongue strength. These usually involve lifting and extending the tongue with a clean finger
3. See an IBCLC within 24–48 hours — for a post-release feeding assessment and latch help
4. Consider bodywork — many tongue-tied babies have tightness in the jaw, neck, and body from compensating. Pediatric chiropractic, craniosacral therapy, or occupational therapy can help release this tension
5. Be patient — it can take 1–2 weeks for feeding to fully improve as the baby learns to use the newly freed tongue
6. Watch for reattachment — a white or yellow diamond-shaped wound is normal healing. If you see the frenulum growing back, contact your provider

When NOT to do a release

Tongue tie release is not always the answer. Consider conservative management first if:

• Baby is gaining weight well and milk transfer is adequate
• Nipple pain is mild and improving with latch help
• The tie was found incidentally (not causing feeding problems)
• Baby is older and has already adapted feeding patterns
• There are other unaddressed issues (prematurity, low tone, maternal undersupply)

Conservative options include:

• IBCLC latch and positioning support
• Bodywork (chiropractic, craniosacral, OT)
• Oral motor exercises
• Paced bottle feeding if supplementing
• Time — some babies outgrow mild ties as the frenulum stretches with use

Lip tie: the often-missed companion

About 30% of tongue-tied babies also have a lip tie — a tight upper lip frenulum that restricts the lip from flanging outward. A tight lip can prevent a deep latch because the baby can't open wide enough.

Signs of lip tie:

• Upper lip can't flange outward (tucks under instead)
• Gap between upper front teeth (diastema)
• Clicking during feeds (suction breaking because lip can't seal)
• Milk leaking from the corner of the mouth

If a baby has both tongue and lip tie, many providers recommend releasing both at the same visit for best results.

Finding the right provider

Not all providers who do tongue tie releases have equal training. Look for:

• An IBCLC for the initial assessment — they see feeding function, not just anatomy
• A provider who observes a full feed before recommending release
• Someone who discusses post-release support (exercises, IBCLC follow-up, bodywork)
• Providers who are members of the ABM or have specialized lactation training
• Be cautious of providers who recommend release for every baby, or who promise immediate "cure"

Find help near you

Want 1:1 support? These board-certified IBCLCs cover the full lactation journey and book directly.

Gale Touger, RN, IBCLC

Raleigh, NC · Carolina Lactation Consultants

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Thelma Tun-Thein, IBCLC

Arlington, VA · Telehealth · Virtual lactation support, nationwide

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Willow Merchant, FNP, IBCLC

Bend, OR · Emerging Hearts Collective

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Gale Touger, RN, FNP, IBCLC

Raleigh, NC · Carolina Lactation Consultants, LLC

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Thelma Tun-Thein, RDN, IBCLC

Arlington, VA · Telehealth nationwide · Natural Beginnings

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Medical disclaimer: This content is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.