Does tongue-tie affect your child’s speech?
Most children with a tongue-tie speak perfectly normally. Tongue-tie has not been established as a cause of delayed speech development, and the Royal College of Speech and Language Therapists does not support dividing one simply to prevent a speech problem.
In a minority, restricted movement at the tip of the tongue may affect articulation, meaning the physical business of forming individual sounds, in some children. Establishing whether that applies to your child takes two assessments: a speech and language therapist looking at how they produce sounds, and a surgeon looking at how the tongue actually moves.
Tongue-tie, also called ankyloglossia, means the lingual frenulum restricts tongue movement. The frenulum is the band of tissue running from the underside of the tongue to the floor of the mouth. Seeing a prominent one tells you very little on its own.
Speech delay and unclear sounds are different problems
Speech and language development is about how a child learns words, understands what is said to them and builds sentences. Articulation is about physically forming particular sounds. The two get talked about interchangeably and they are not the same thing.
Picture two children. One is behind in using and understanding language generally. The other talks freely and in full sentences, but a few sounds come out unclearly. A speech and language therapist would assess those two children quite differently, and only the second one raises any question about tongue movement at all.
| Speech and language development | Articulation |
|---|---|
| How your child understands and uses words and sentences | How your child forms particular speech sounds |
| Assessed by looking at language skills and overall speech development | Assessed by looking closely at sound production and speech patterns |
| Tongue movement rarely explains broad language delay | Restricted tongue movement may matter where the speech pattern fits a mechanical restriction |
Two further complications are worth knowing. Children often work around a restriction by using alternative tongue movements to make sounds, so a tongue-tie can be present and compensated for. And a lisp or a pronunciation difficulty can arise perfectly well without any restriction of tongue movement at all.
A speech sound disorder means difficulty producing or organising speech sounds. It needs proper assessment by a speech and language therapist before anyone connects it to a tight frenulum.
If you have questions about your child’s care, you can arrange a consultation with Miss Jana Torres-Grau. Arrange a consultation
Two studies, two questions, two answers
Research on this looks contradictory until you notice the studies are not asking the same thing. One question is whether tongue-tie causes speech disorders across children in general. The other is whether carefully selected children improve after a procedure. Different questions, different answers, both legitimate.
Wang and colleagues reviewed 16 studies in 2022 and found no clear general connection between tongue-tie and speech disorders. Among the studies looking at how often speech disorders occurred, the findings conflicted.
A 2024 meta-analysis by Carnino and colleagues found improved articulation after frenectomy, a more extensive release of the frenulum, in selected children. The authors were candid about the limits: the available investigations were limited, and the speech outcomes were subjective, reported by parents or judged by speech professionals.
Here is the part that matters for a decision. Studies that included a comparison group of untreated children have not consistently found that surgery improves speech. Children develop, and they receive other care alongside any procedure, so improvement after an operation does not establish that the operation caused it. Without a comparison group there is no way to separate the two.
None of that means no child benefits. It means a general expectation that dividing a tongue-tie will clear up unclear speech is not supported.
A few words from Miss Jana Torres-Grau
Start with a speech and language assessment where the concern is unclear sounds or pronunciation. It defines the speech pattern, which is the thing any surgical opinion has to be measured against.
The decision rests on movement, not appearance
Looking under the tongue cannot settle this. What decides it is whether restricted movement and the child’s speech pattern actually line up.
- A speech and language therapist assesses the speech pattern. They establish whether there is a speech sound disorder and look in detail at how your child produces sounds.
- A surgical examination assesses tongue movement. How far the tongue lifts and extends, and what the frenulum is physically doing to limit it.
- The two findings are read together. Division, also called frenotomy, is worth considering where a functional restriction has a clear role in the speech difficulty your child actually has.
Neither route has to come first. Which one you start with depends on what has already been looked at and what the speech pattern suggests, and the two are answering different halves of the same question rather than competing.
Miss Torres-Grau examines tongue movement and gives a surgical opinion where there may be a functional indication for division, seeing families at Evelina London Children’s Hospital from London and elsewhere in the UK.
Bright reception corridor at Evelina London Children’s Hospital
A few words from Miss Jana Torres-Grau
Note which sounds your child finds difficult and when. That list is what allows an assessment to compare how they produce sounds against how the tongue moves, rather than assessing each in isolation.
Common questions about tongue-tie and speech
Can a child speak normally with a tongue-tie?
Yes, and most do. Tongue-tie has not been established as a cause of delayed speech development, so the presence of one is not a prediction about how your child will speak.
Can speech therapy help without tongue-tie surgery?
Often, yes. Speech and language therapy helps children with speech sound disorders, and the therapist assesses whether it addresses the particular difficulty. A surgical opinion is worth adding where tongue movement looks genuinely restricted.
Is there a best age for tongue-tie treatment for speech?
Research has not found one. The 2024 meta-analysis appeared to show an age relationship, and it disappeared once the figures were statistically adjusted. Function decides the timing rather than a birthday.
Will tongue-tie division prevent future speech problems?
There is no evidence supporting division for that reason alone, and current guidance does not support it. Division has a role where an assessment identifies a functional restriction connected to a difficulty the child already has.
Better evidence will come from studies that measure speech consistently and identify which patterns of restricted movement actually predict benefit. Until then, the sound basis for a decision is what a child’s tongue does and how they produce sounds, rather than what the frenulum looks like.
This article gives general information. An individual assessment is needed to understand a child’s speech and tongue movement.
This is general information, not medical advice.
Reviewed by Miss Jana Torres-Grau, Consultant Paediatric Plastic Surgeon, FRCS (Plast), General Medical Council Specialist Register.
Every child is different, so a personal assessment is the best next step. Ask a question
