Does oral motor therapy actually help speech delay?

Last updated 2026-07-11

What oral motor therapy actually involves

Oral motor therapy covers a set of exercises meant to strengthen or coordinate the muscles of the mouth, lips, tongue, and jaw. The logic sounds reasonable on its face: speech requires muscle movement, so training those muscles should help speech. In practice, this might mean a child blowing bubbles through a straw, pushing their tongue against a depressor, puffing their cheeks, biting a chew tube, or making exaggerated lip movements, sometimes with a therapist, sometimes with a kit a parent bought online.

These techniques travel under a lot of names: oral motor exercises, non-speech oral motor exercises (NSOMEs), oro-motor therapy, myofunctional therapy, and assorted branded programs, some of which come with colorful tools, workbooks, and certification courses costing hundreds of dollars. It isn't one standardized treatment, it's a loose category, and that matters when you try to weigh the evidence, since "oral motor therapy" can mean something different depending on who's running the session.

What the research says

The evidence here isn't ambiguous. Multiple systematic reviews have asked whether non-speech oral motor exercises change how children produce speech sounds, and the answer keeps coming back the same: they don't.

A widely cited 2008 review by Gregory Lof and Margaret Watson looked at over 30 years of research and found no evidence that NSOMEs improve speech production in children ^[1]. Their explanation is fairly blunt: the muscle patterns used in nonspeech tasks like blowing, sucking, or chewing aren't the same motor patterns the brain uses for speech. Speech is its own specific motor skill, and you get better at it by practicing speech, not by working the mouth muscles some other way.

ASHA's technical report on the subject states it plainly: "There is no strong scientific evidence supporting the use of non-speech oral motor exercises to facilitate the production of speech sounds" ^[2]. That's a professional organization reviewing the literature and saying, flatly, it doesn't work.

A 2009 study by McCauley, Strand, Lof, Schooling, and Fey in the American Journal of Speech-Language Pathology arrived at the same conclusion, rating the quality of evidence for NSOMEs as "weak to nonexistent" ^[3].

There's no good data showing harm from oral motor exercises in typically developing kids. The real cost is opportunity: time spent blowing horns is time not spent on speech practice, which does have strong evidence behind it.

Why so many therapists still use it

This part is a little uncomfortable, but it's worth saying plainly. A large share of practicing SLPs still use oral motor exercises. In the Lof and Watson survey, more than 85% of the SLPs polled reported using NSOMEs ^[1]. A few things explain that.

The techniques feel logical. Weak lips, low muscle tone, poor tongue control are real, observable things, and it seems intuitive that strengthening them would help. But intuition isn't evidence, and the motor systems involved in nonspeech tasks don't transfer to speech the way we'd want them to.

Continuing education in the field has also historically leaned heavily on oral motor training, some of it expensive, some bundled with elaborate tool kits. Therapists who've invested in that training understandably hesitate to set it aside.

And kids often enjoy these activities. Blowing bubbles is fun, chew tubes are novel, and if a session goes well and a child makes progress through other parts of it, it's easy to credit the whole session rather than isolate what actually worked.

None of this means your child's therapist is bad at their job. Practice tends to lag behind research in every field of medicine. But it's still reasonable to ask questions.

Where it might actually help

The group of kids who might benefit is narrower than people assume. Children with significant structural or neurological issues affecting the oral-motor system for feeding, not speech, may benefit from some oral motor work. A child with low muscle tone from Down syndrome, for instance, may have feeding difficulties that respond to oral sensory and motor intervention, but that's a feeding goal, not a speech-sound goal.

Children with dysarthria, a motor speech disorder caused by neurological damage that directly affects muscle strength and coordination, are a different case from kids with functional speech delays or apraxia. Some strengthening work may make sense there because the underlying problem really is about muscle function rather than motor learning for speech.

Myofunctional therapy, tongue thrust treatment being one example, sometimes gets grouped under the oral motor umbrella too, and there's modest evidence for it in specific situations, like correcting a tongue thrust affecting dental structure or certain lisps. That's a narrow, specific use case.

For the average late talker or child with a speech sound disorder, which is the most common reason parents look into this in the first place, the research doesn't support it. If your child's SLP recommends oral motor exercises for speech sound production, it's fair to ask which evidence they're basing that on.

What works instead

Speech therapy has plenty of well-evidenced approaches, and most of them involve actual speech production rather than muscle drills.

For speech sound disorders, minimal pairs therapy, naturalistic speech sound intervention, and motor learning-based methods all have solid research support ^[4]. The core idea is straightforward: children get better at producing speech sounds by repeatedly producing them in meaningful contexts, with feedback.

For childhood apraxia of speech (CAS), the evidence points toward motor learning approaches like Rapid Syllable Transition Treatment (ReST) and the Nuffield Dyspraxia Programme, along with Dynamic Temporal and Tactile Cueing (DTTC), which has a growing evidence base for CAS ^[8]. These involve intensive, frequent practice of actual speech movements, not nonspeech ones. The article on childhood apraxia of speech goes into more detail on what that diagnosis means and what therapy for it looks like.

For late talkers and children with language delays rather than speech sound delays, language facilitation, parent-implemented naturalistic strategies, and augmentative and alternative communication (AAC) all have strong evidence, especially for children who aren't yet talking meaningfully ^[12]. If your child is significantly delayed in expressive language, it's worth reading about AAC devices.

For autism spectrum communication delays, approaches built around social communication and play-based interaction have more support than drill-based oral motor work, covered in more depth in the piece on autism spectrum speech therapy.

In many cases, starting early intervention matters more than the exact technique chosen. The brain is most plastic in the first three years, so getting any evidence-based therapy started early beats waiting around for the perfect approach.

Figuring out what your child's SLP is doing

Just ask. You're entitled to know what approach your SLP is using and why, and a good therapist won't mind the question. Worth asking directly: whether any of the exercises are non-speech oral motor exercises, what the goal of a given activity is (speech sounds or something else), and what the evidence says about this approach for your child's specific diagnosis. If your child comes home practicing with a straw, a horn, or a cheek-puffing exercise, that's oral motor work. It's not automatically a red flag for the relationship, but it's worth a conversation.

A defensive response, or one that can't explain the evidence behind a technique, is more concerning than the use of any single exercise. Most good therapists know the ASHA position and can explain the reasoning behind their choices.

You can also look for SLPs who list evidence-based practice areas on their profiles. ASHA's Find a Professional directory lets you search by specialty, which can help you find someone trained in approaches with research support behind them ^[5].

What about tools you can buy online, like chewy tubes or oral motor kits?

Save your money for actual speech therapy sessions. There's a whole industry selling oral motor kits, chew tools, vibrating toothbrushes marketed as speech aids, and elaborate programs with workbooks and DVDs. A basic kit runs $30-50. Some branded programs run $150 or more. None of them has peer-reviewed evidence showing it improves speech sound production in children with speech delay.

Chew tubes and oral sensory tools can have a legitimate calming or sensory function for some kids, particularly those who are sensory-seeking, and that's fine. Using a chew tube because your kid chews on everything and needs a safe outlet is a different thing from using it as speech therapy.

If you want to do something at home that actually supports speech development, the research points to parent-implemented language strategies: narrate what you're doing, expand on what your child says, cut back on questions in favor of comments, and read books together while talking about the pictures rather than drilling words. None of that costs anything.

If you want a structured home support tool, Little Words is an AI speech companion app built for neurodivergent kids that focuses on language modeling and interaction rather than nonspeech exercises. You can take the quiz to see if it fits your child's needs, though the free strategies above work too.

Does low muscle tone cause speech delay, and does treating it help?

Low muscle tone (hypotonia) is real and does affect some children's development, including speech, but the relationship is more complicated than "weak muscles cause speech delay, so strengthen the muscles."

Hypotonia can affect a child's ability to sustain the muscle contractions needed for clear speech, particularly in severe cases. But most children with hypotonia who have speech delays see improvement with speech-specific intervention, not with nonspeech strengthening exercises.

The motor learning research explains why. Strengthening a muscle in one context doesn't automatically transfer to a different, highly coordinated motor task. A child who can push their tongue against a depressor more forcefully hasn't necessarily improved the precise, rapid tongue movements needed to produce the sound "r" or "l." Those are different skills.

For children with Down syndrome specifically, where hypotonia and speech delay often co-occur, the evidence supports speech-specific intervention focused on motor learning, not generalized oral motor strengthening ^[6]. Having hypotonia isn't enough on its own to justify oral motor exercises as a speech intervention.

If your child has significant hypotonia, an evaluation by a developmental pediatrician can help clarify what role it's playing. The AAP has guidance on developmental surveillance that can help you understand what evaluations make sense at what ages ^[7].

What should I ask before starting speech therapy?

A few questions worth asking any SLP before or early in treatment: What is my child's specific diagnosis or area of difficulty, whether that's speech sounds, language, motor speech, or fluency? What treatment approach do you use for this, and is it evidence-based? Where can I read about that evidence? How will we know if it's working, and in what timeframe? What can I do at home to support progress?

For speech sound disorders, the evidence-based approaches include minimal pairs, the complexity approach, and motor-learning-based methods. For apraxia specifically, look for someone trained in DTTC or a similar motor-learning approach. For language delay, naturalistic developmental behavioral interventions (NDBIs) have solid research support.

If oral motor exercises come up, you now know enough to ask whether it's targeting speech sounds or something else. That one question tells you a lot about whether your therapist is working from an evidence-based framework.

Finding a good speech therapist can be hard, especially in areas with long waitlists. The article on speech therapy and speech therapists covers what to look for and how to work through the system, and for families who can't get to in-person therapy easily, online speech therapy has become more accessible and can be a real option.

How do I bring this up with my child's current therapist without damaging the relationship?

This is a real concern. You've found a therapist, you've built a relationship, your child likes them, and now you're reading that some of what they're doing might not be evidence-based. That's awkward.

A few things to keep in mind. First, oral motor exercises are rarely the whole session. If 10 minutes of a 45-minute session involves some NSOME work, the other 35 minutes might be doing real good, and the relationship plus the speech-specific work may well be worth continuing.

Second, most therapists respond well to parents who are genuinely curious rather than accusatory. Saying "I've been reading about oral motor therapy and saw some things from ASHA, I'd love to understand how you're thinking about this" leads to a very different conversation than "I read online that this is wrong."

Third, if the therapist gets defensive, dismisses your question, or can't explain their rationale, that tells you something. A good clinician should be able to engage with this, since it's been a live debate in the field for 15 years and counting.

You can also ask your child's pediatrician to weigh in. The AAP recommends that pediatricians refer children with suspected speech delays to early intervention or directly to an SLP, and they can help you think through what questions to ask ^[7].

The bottom line

If someone is recommending oral motor exercises specifically to improve your child's speech sounds, ask for the evidence. There isn't strong evidence there, and that's the honest answer.

This doesn't mean everything called "oral motor therapy" is useless. It means the specific claim that nonspeech oral exercises improve speech production isn't supported by the research we have. ASHA says so, multiple systematic reviews say so, and the underlying theory (strengthen the muscle, improve the skill) doesn't match how motor learning actually works for speech.

What you want for your child is therapy focused on actual speech production, with specific targets, regular progress monitoring, and a therapist who can explain their approach. Those things exist. They work. They're worth fighting for.

If your child has apraxia, read about apraxia of speech and look for a therapist trained in motor-learning approaches. If your child is a late talker with more of a language delay than a speech sound problem, focus on language-rich interaction at home and get an SLP evaluation as soon as you can. If your child is on the autism spectrum, autism spectrum speech therapy covers the approaches with the best evidence for that population.

And if you're waiting for services or supplementing therapy at home, Little Words offers an AI-based speech companion built around evidence-based language principles rather than oral motor drills. You can find it at littlewords.ai/start.

Common questions about oral motor therapy and speech development

ASHA doesn't recommend oral motor therapy. Its position is that there's no strong scientific evidence that non-speech oral motor exercises improve speech sound production, and the technical report on the topic (along with the broader research it draws on) consistently finds that these exercises don't transfer to actual speech skills. What ASHA does back is speech-specific intervention, which has much stronger research behind it.

Direct harm from oral motor exercises is unlikely for most children. The real cost is opportunity: time spent blowing bubbles or doing tongue exercises is time not spent on approaches that actually move the needle. If your child has limited therapy minutes or is stuck on a waitlist, that tradeoff starts to matter. Some clinicians also notice that oral motor tools can turn into a sensory preference that gets in the way of therapy goals, though this depends on the child.

If your child's SLP recommends oral motor therapy, that doesn't automatically mean you need a new therapist. Ask what evidence they're relying on and what specific goal the work targets. A feeding or sensory goal is a different conversation than a speech-sound goal. If they can't explain the reasoning, or get defensive when you ask, that's a fair reason to seek a second opinion. A therapist willing to talk it through openly is often worth keeping, even if you end up adjusting the plan together.

Blowing on horns or bubbles doesn't help with speech, despite how often it shows up in therapy toy bins. It's a classic non-speech oral motor activity, and the research consistently shows no benefit to speech sound production. The motor pattern for pushing air through pursed lips has nothing to do with the patterns used to make speech sounds. A child can become excellent at blowing bubbles and show zero change in clarity. Fine as a game, not speech therapy.

A speech sound disorder and a language delay aren't the same thing, though children often have both. A speech sound disorder is about how a child produces individual sounds (substituting, dropping, or distorting them in ways that make speech hard to understand). A language delay is about the amount and complexity of the words and sentences a child uses and understands. Oral motor therapy gets marketed heavily for speech sound problems, but the evidence doesn't support it for either category.

Even for children with Down syndrome, where hypotonia is common, the evidence still doesn't support oral motor exercises as a speech intervention. Speech-specific motor learning approaches show more promise. Some oral sensory work may help with feeding difficulties tied to low muscle tone, but that's a feeding goal, not a speech goal, and it's worth asking your SLP to be clear about which one they're targeting.

Chewy tubes and similar oral sensory tools can be genuinely useful for kids with autism who chew on clothing, skin, or unsafe objects. That's sensory regulation, not speech therapy: there's no evidence chew tubes improve speech production. If a chew tube helps your child feel regulated, that's a reasonable tool to keep around. Just don't count it toward speech goals.

How fast speech therapy works depends on the diagnosis, its severity, and how often sessions happen. Many children with mild to moderate speech sound disorders show real progress within 3-6 months of weekly therapy. Childhood apraxia of speech usually needs longer, more intensive treatment. Toddlers with language delays often respond quickly to parent coaching and naturalistic strategies. Checking progress every 6-8 weeks is standard practice.

For a late talker, usually a child under 30 months with fewer words than expected but otherwise typical development, evidence-based therapy leans on naturalistic language facilitation, often coached through the parent. That means following the child's lead, modeling language just slightly above what they're currently using, and expanding on what they say. If the delay is still there past age 3, speech-specific intervention or an AAC evaluation becomes more of a priority.

Myofunctional therapy and oral motor therapy overlap but aren't the same thing. Myofunctional therapy targets tongue posture and swallowing patterns, often for tongue thrust or open-bite issues that affect dental structure and sometimes certain speech sounds, and there's modest evidence for it in those specific situations. Oral motor therapy is the broader, catch-all term for nonspeech exercises that don't have that same evidence behind them. Worth asking your provider which category their recommendation actually falls into.

As general benchmarks, most children say their first words by 12-15 months, use about 50 words and start combining two words by 24 months, and are understood by strangers about 75% of the time by age 3. The AAP recommends developmental screening at 9, 18, and 24 or 30 months. Any concern is worth raising with your pediatrician, who can refer you to early intervention (for children under 3) or straight to an SLP.

You don't need to buy anything special to support speech at home. The strategies with the best evidence cost nothing: narrate your daily routines out loud, expand on what your child says by a word or two (if they say "ball," you say "red ball" or "throw the ball"), swap yes/no questions for open comments, and talk about the pictures in a book instead of drilling vocabulary. Parent-implemented naturalistic strategies have solid research support, especially for late talkers and language delays.

Childhood apraxia of speech doesn't respond to oral motor therapy, because apraxia is a motor planning disorder, not a muscle weakness problem, so strengthening exercises don't touch the actual issue. The approaches with the best evidence for CAS involve intensive, motor-learning-based practice: DTTC, ReST, and the Nuffield Dyspraxia Programme. All of these require producing real speech targets repeatedly with specific feedback, and a therapist trained in CAS will know them well.

Sources

1. Lof & Watson (2008), American Journal of Speech-Language Pathology, 'A nationwide survey of nonspeech oral motor exercise use: implications for evidence-based practice': A survey and review found no evidence that non-speech oral motor exercises improve speech production in children; over 85% of SLPs surveyed used NSOMEs despite lack of evidence
2. ASHA, 'Oral Motor Treatment' technical report and position statement: ASHA states there is no strong scientific evidence supporting the use of non-speech oral motor exercises to facilitate speech sound production
3. McCauley et al. (2009), American Journal of Speech-Language Pathology, 'Evidence-based systematic review: effects of nonspeech oral motor exercises on speech': Systematic review rated the quality of evidence for NSOMEs as 'weak to nonexistent' for improving speech production in children
4. ASHA, 'Speech Sound Disorders: Articulation and Phonology' practice portal: ASHA identifies minimal pairs, motor learning-based approaches, and naturalistic speech sound intervention as having research support for speech sound disorders
5. ASHA, 'Find a Professional' directory: ASHA maintains a searchable directory of certified speech-language pathologists that allows filtering by specialty area
6. Kumin (2012), Communication Skills in Children with Down Syndrome, and associated clinical literature review: Evidence supports speech-specific motor learning intervention over generalized oral motor strengthening for children with Down syndrome who have speech delays
7. American Academy of Pediatrics, 'Developmental Surveillance and Screening' policy: AAP recommends developmental surveillance at every well-child visit and standardized screening at 9, 18, and 24 or 30 months; speech concerns warrant referral to early intervention or SLP
8. Maassen (2002) and Strand et al., DTTC for childhood apraxia: motor learning principles in CAS treatment, ASHA publications: Dynamic Temporal and Tactile Cueing (DTTC) and motor-learning-based approaches show evidence of effectiveness for childhood apraxia of speech; nonspeech exercises do not address the motor planning deficit
9. ASHA, 'Childhood Apraxia of Speech' practice portal: ASHA practice portal identifies motor learning-based approaches (DTTC, ReST, Nuffield) as having the strongest evidence for CAS treatment
10. Law et al. (2003), Cochrane Review, 'Speech and language therapy interventions for children with primary speech and language delay or disorder': Cochrane review found that speech and language therapy is effective for children with phonological or vocabulary difficulties, supporting speech-specific intervention over non-targeted exercises
11. IDEA (Individuals with Disabilities Education Act), 20 U.S.C. § 1400 et seq., Part C early intervention provisions: Federal law requires states to provide early intervention services to children under age 3 with developmental delays, including speech and language delays, at no cost to families
12. Tambyraja, Schmitt & Farquharson (2020), Language Speech and Hearing Services in Schools, parent-implemented intervention review: Parent-implemented naturalistic language strategies show evidence of supporting language development in late talkers, particularly when coached by an SLP