Speech-language pathologists (SLPs) are usually associated with language delays and articulation work, but their scope extends further into orthodontic territory than most families realize — particularly around tongue posture, oral motor function, and swallowing patterns.

The same low, forward tongue resting position that contributes to a narrow palate and airway restriction also tends to interfere with certain speech sounds. Sounds like “s,” “z,” “t,” “d,” “l,” and “r” require precise tongue placement against the palate or teeth, and a tongue that habitually sits in the wrong position — or pushes forward with every swallow — can make those sounds persistently difficult, even with dedicated speech practice.

Signs worth an SLP evaluation alongside orthodontic care:

• A lisp or unclear “s”/”z” sounds that hasn’t resolved by the expected age
• Visible tongue pushing between the front teeth during speech or swallowing
• An open bite that won’t close with orthodontic treatment alone (tongue interference)
• Certain sounds staying difficult despite general speech therapy
• Effortful or messy chewing and swallowing patterns

An SLP trained in orofacial myofunctional disorders can work directly on tongue placement, swallowing mechanics, and oral rest posture — this overlaps with myofunctional therapy, and some providers offer both. What matters more than the title is that the muscle function is actually being addressed, not just the tooth position.

At our Falcon office, we coordinate with local SLPs whenever a tongue thrust or posture issue is likely to interfere with how well orthodontic treatment holds, or when a family raises ongoing speech concerns during a visit. Correcting the bite alone in these cases often isn’t enough — if the tongue keeps doing what it’s always done, the same open bite or flared teeth tend to return.

If your child’s speech sounds haven’t cleared up with standard therapy, or you’ve noticed their tongue pushing against their teeth, bring it up at your next visit. It may connect more directly to their bite than expected.