When a child’s speech therapy progress stalls despite consistent effort, myofunctional therapy is sometimes the missing piece. Myofunctional therapy for speech delays addresses the muscle function underlying certain persistent sound errors, particularly when tongue posture, tongue-tie, or a tongue-thrust swallow is interfering with the mechanics of speech itself, not just the learned pattern.
Why Muscle Function Affects Speech
Speech relies on precise, coordinated movement of the tongue, lips, and jaw. When the resting posture or movement pattern of these muscles is off, whether due to habit, tongue-tie, or an orofacial myofunctional disorder, it can directly affect a child’s ability to form certain sounds correctly, no matter how much traditional speech therapy is provided. For a full explanation of what these underlying disorders involve, see What Is Myofunctional Therapy?
Speech Sounds Most Often Affected
Certain sounds are more likely to be impacted by myofunctional issues than others, particularly ones that require precise tongue placement:
- S and Z sounds, often affected by a forward tongue-thrust pattern
- R sounds, which require specific tongue elevation and positioning
- L sounds, also dependent on tongue tip placement
- TH sounds, closely tied to tongue position between or behind the teeth
If a child has been working on one of these sounds in speech therapy for an extended period without much progress, it’s worth asking whether an underlying myofunctional pattern could be a contributing factor.
The Connection Between Tongue-Tie and Speech Delays
Tongue-tie is one of the most common structural causes of a myofunctional speech issue. When the tongue’s range of motion is physically restricted, no amount of speech therapy alone can fully correct sounds that require tongue mobility the child simply doesn’t have. In these cases, a coordinated approach, sometimes including a frenectomy alongside myofunctional therapy, tends to produce better results than speech therapy in isolation. We cover this connection in more detail on our frenectomy care page.
How a Myofunctional Evaluation Differs from a Speech Evaluation
A traditional speech evaluation focuses on sound production, language development, and articulation patterns. A myofunctional evaluation looks specifically at how the muscles of the mouth and face function at rest and during activities like swallowing and breathing, which can reveal a root cause that a speech evaluation alone wouldn’t necessarily catch. Many families end up pursuing both evaluations, especially when speech progress has plateaued.
How Myofunctional Therapy Supports Speech Progress
Myofunctional therapy doesn’t replace speech therapy. Instead, it works to correct the underlying muscle pattern, such as tongue posture or a tongue-thrust swallow, that may be limiting how effective speech therapy can be. Many providers coordinate directly with a child’s speech therapist so that both types of therapy reinforce each other. Some of the foundational exercises used overlap with general myofunctional therapy exercises, which we outline in Myofunctional Therapy Exercises You Can Do at Home.
Signs Speech Delays May Be Connected to a Myofunctional Disorder
- Speech therapy progress has plateaued despite consistent sessions
- Persistent difficulty with s, r, l, or th sounds specifically
- A visible tongue-thrust pattern during speech or swallowing
- A known or suspected tongue-tie
- Chronic mouth breathing alongside speech difficulty
What to Expect If Both Are Needed
When a child needs both speech therapy and myofunctional therapy, providers typically sequence or coordinate treatment rather than running them completely independently. In some cases, myofunctional therapy addresses the underlying muscle pattern first, or in parallel, so that speech therapy techniques have a better foundation to build on. This is especially common when tongue-tie is part of the picture. For a broader look at what to expect from a first evaluation, see Myofunctional Therapy Near Me: What to Expect at Your First Visit.
Frequently Asked Questions
Will myofunctional therapy fix a lisp on its own?
Not typically on its own. It’s most effective when coordinated with speech therapy, especially when a physical or muscular cause is contributing to the sound error.
How do I know if my child’s speech delay is related to tongue-tie?
A myofunctional evaluation can assess tongue range of motion and posture to help determine whether restricted movement is playing a role. This is often done alongside a standard speech evaluation.
Is it too late for myofunctional therapy if my child is already a teenager?
No. While earlier evaluation can help, myofunctional therapy can still support speech and muscle function in teens and adults. Our article on whether myofunctional therapy works for adults covers this further.
If your child’s speech progress has stalled, schedule an evaluation at our Chapel Hill, NC office, serving families throughout Chapel Hill, Durham, Carrboro, and the greater Triangle area.