Most parents think about straight teeth when they think about what shapes a child’s smile. What fewer realize is that something quieter and more fundamental is happening at the same time: the muscles of the mouth, tongue, and face are actively participating in how a child’s jaw grows, how their airway develops, and how well they breathe and sleep.
When those muscles work the way they should, everything else gets easier. When they don’t, the effects ripple outward in ways that often surprise parents.
That’s what makes orofacial myofunctional therapy worth understanding at a deeper level. The question this post answers is: why does it matter, and what does it actually do for your child’s long-term development?
The Muscles That Shape a Face
It sounds counterintuitive to say that muscles shape bones. But in the developing face of a child, that’s exactly what happens.
The position of the tongue at rest has a meaningful effect on how the upper jaw develops. When the tongue rests against the roof of the mouth consistently, it applies gentle outward pressure that supports the arch’s natural widening. When the tongue rests low instead, that support disappears, and the cheek muscles apply inward pressure, leading to a narrower arch and a higher, more vaulted palate.
A narrower palate means less room for adult teeth to come in correctly. It can also mean a narrower nasal airway, because the floor of the nose sits directly above the roof of the mouth. What happens in the mouth doesn’t stay in the mouth.
Peer-reviewed research has documented the relationship between mouth breathing, abnormal craniofacial development, and orofacial muscle function. Systematic reviews in this area have identified OMT’s role in muscle re-education as part of a broader approach to supporting healthy facial growth in children with sleep-disordered breathing.
Pediatric dentists observe the downstream effects of poor oral muscle function regularly: crowded teeth, bite problems, and facial patterns that reflect years of muscles working against healthy growth instead of with it.
The Sleep Connection: Muscles and Breathing at Night
Sleep-disordered breathing, including snoring and mild obstructive breathing, is meaningfully affected by the muscle tone and resting posture of the tongue, throat, and soft palate. A tongue that sits low in the mouth during waking hours tends to fall back during sleep, increasing upper airway resistance.
A 2024 review published in a peer-reviewed journal covering myofunctional therapy in pediatric dentistry, citing both the American Academy of Pediatric Dentistry and the Academy of Oral Myofunctional Therapy, noted that multiple evidence-based studies show breathing issues during sleep improved after six months of myofunctional therapy. The review describes OMT as strengthening the orofacial muscles, promoting nasal breathing, and improving the resting posture of the tongue in ways that help maintain an open airway during sleep.
OMT doesn’t replace medical treatment for significant sleep apnea. But it functions as a meaningful piece of the whole-child airway picture, particularly when combined with approaches like the Vivos system that Deschutes Pediatric Dentistry offers for children with sleep-disordered breathing.
The practical upside for families: children who breathe better at night sleep more deeply. Better sleep affects energy, focus, mood, and behavior, and parents often notice those changes before a formal diagnosis tells them what shifted.
The Speech Connection: When the Tongue Gets in the Way
Tongue thrust, the habit of pushing the tongue forward against or between the teeth during swallowing, affects speech more than most parents realize.
Sounds like /s/, /z/, /t/, /d/, /n/, and /l/ all require precise tongue placement. When the tongue’s resting posture or swallowing pattern is off, those placements are harder to hold consistently. A child with an untreated tongue thrust may work hard in speech therapy and make limited progress, because the underlying muscle habit keeps reasserting itself.
This is one of the reasons OMT and speech therapy can be effective together. OMT addresses the muscle pattern; speech therapy works on the sound production. Neither replaces the other, but when both address the root pattern and the surface symptom, children often respond faster.
For parents whose children have been in speech therapy without seeing the progress they expected, asking about a myofunctional evaluation is a reasonable next step, whether through the speech therapist or through the dental team.
The Dental Connection: OMT as a Long Game
There’s a reason orthodontists increasingly factor myofunctional therapy into treatment planning. Braces and expanders move teeth and change bone position. But if the muscle patterns that contributed to crowding or bite problems in the first place aren’t addressed, teeth tend to drift back over time. OMT can reduce that relapse risk by changing the underlying conditions in which the teeth sit.
For younger children, this is even more meaningful. A child whose tongue posture and breathing patterns support healthy jaw growth may need less orthodontic work down the road, not because anyone predicted the future, but because the muscles were doing their job during the years when the jaw was most responsive to guidance.
The American Academy of Pediatric Dentistry’s reference manual recognizes the role of early identification of functional and airway-related concerns in pediatric dental care. Deschutes Pediatric Dentistry’s whole-child approach is built on exactly that philosophy: catching patterns that matter while the window for intervention is still wide.
The Case for Early Identification
Not everything about OMT is urgently time-sensitive. But children’s facial bones and muscle patterns are most responsive to change during the years of active growth.
The International Association of Orofacial Myology notes that early identification of orofacial myofunctional disorders is preventive for compound problems that emerge later in life. A muscle pattern that causes a narrow arch and high palate in a 5-year-old is still modifiable. That same pattern, left through the teenage years, is harder to address and more likely to require structural interventions.
Older children are not beyond help. OMT can benefit kids well into their teen years. But the honest answer to “when should we look into this?” is usually: now, when you first notice something that doesn’t seem quite right.
What This Looks Like at Deschutes Pediatric Dentistry
Dr. Steve and Dr. Stephanie build airway and muscle-function awareness into every child’s care. That means they’re watching more than teeth at each visit. They’re monitoring how the jaw develops, noticing breathing patterns and tongue posture, and flagging patterns that warrant a closer look.
When OMT is part of the conversation, it fits into a coordinated approach that may also include airway evaluation, sleep care, and monitoring over time. You don’t need to arrive knowing what your child needs. You just need to share what you’ve observed.
Learn more about the practice’s orofacial myofunctional therapy program, and schedule a visit when you’re ready to start the conversation.
Frequently Asked Questions: OMT and Child Development
At what age does OMT make the most difference?
Earlier tends to be better, not because older children can’t benefit, but because the jaw and facial bones are most responsive to muscle-function changes during early childhood through early adolescence. There is no single cutoff. Children who are developmentally ready to engage in guided exercises can benefit across a wide age range.
How do I know if my child’s airway is affected by poor oral muscle function?
Signs worth raising with a dentist include habitual mouth breathing, snoring or restless sleep, a narrow arch, crowding before all adult teeth are in, and difficulty achieving consistent nasal breathing. None of these individually confirms an airway issue, but together they’re worth discussing at your next visit.
Will orofacial myofunctional therapy replace the need for orthodontics?
Not necessarily, but it can change the scope and durability of orthodontic outcomes. OMT creates better conditions for teeth to stay where treatment puts them. Some children who receive early OMT need less orthodontic intervention later. Others benefit from both, but with healthier muscle function supporting the result.
Is OMT covered by dental or medical insurance?
Most dental insurance plans do not cover OMT directly. Medical insurance may provide coverage when therapy is tied to a documented diagnosis. The Deschutes team can help guide families through coverage questions once an evaluation has been completed.
What is the connection between OMT and the Vivos system?
They address complementary aspects of airway health. The Vivos system uses a non-invasive appliance to support the development of the upper jaw and airway. OMT supports the muscle function that complements and sustains those structural changes. Together, they address both the form and the function of the airway. More information is available at deschuteskids.com/pediatric-sleep-care/.
The Bigger Picture
Orofacial myofunctional therapy is not a cure for everything, and it is not the right fit for every child. But for children whose oral muscles are working against their growth instead of with it, it is a meaningful, non-invasive way to support a healthier trajectory for their bite, their breathing, their sleep, and their development overall.
If this raises questions about your own child, bring them to Dr. Steve or Dr. Stephanie at your next visit. The earlier these patterns are seen, the more options there are for guiding them in the right direction.
Schedule a visit with Deschutes Pediatric Dentistry to start the conversation about orofacial myofunctional therapy for your child.
