Most of us don’t spend much time thinking about what our mouths do when we’re not using them. But it turns out, those quiet moments — watching TV, riding in the car, playing at the park — are doing a lot of quiet work.
Oral rest posture refers to the natural, resting position of the lips, tongue, and jaw when we are not speaking, eating, or drinking. Ideally, this looks like: lips gently closed, teeth slightly apart, and the tongue resting lightly against the roof of the mouth (the palate). This is sometimes called the “tongue on the spot” position.
The mouth spends most of its time at rest — and that default position has a bigger impact on development than many families realize.
Why does resting posture matter?
The tongue is a powerful muscle. When it rests against the roof of the mouth consistently, it actually helps shape the palate and support the development of the upper jaw. Over time, this can influence how the teeth come in, how the airway develops, and even how a child breathes.
When the tongue rests low in the mouth or pushes against the teeth, or when the lips rest apart, it can sometimes be connected to patterns like mouth breathing, dental crowding, or changes in facial structure — especially during the years when children are growing rapidly.
What might you notice at home?
You might observe your child with their mouth hanging open at rest, their tongue peeking between their teeth, or a tendency to breathe through their mouth rather than their nose. Some children have a forward head posture or frequently need to clear their throat. These can be worth mentioning to your child’s care team — not because any one sign means something is wrong, but because your observations matter.
Where does myofunctional therapy come in?
Orofacial myofunctional therapists work specifically with the muscles of the mouth and face. If oral rest posture is identified as something to address, therapy often involves simple exercises to strengthen the tongue, encourage nasal breathing, and help the lips maintain a gentle seal. It’s collaborative work — and it works best alongside dentists, orthodontists, ENTs, and other providers who know your child well.
The goal isn’t perfection. It’s awareness — and asking good questions at your child’s next appointment.