How to Stop Mouth Breathing in Children: Causes, Risks and Treatment Options in Milwaukee
Mouth breathing in children is treatable, but the fix depends on the cause. Some kids breathe through their mouth because the nose is blocked by allergies or enlarged adenoids. Others can breathe through the nose but have lost the habit, because the tongue rests low and the lips stay apart. Most need a combination of medical care and orofacial myofunctional therapy to retrain nasal breathing for good. This guide walks Milwaukee-area parents through the signs, the causes, the treatment options and what to do first.
Why mouth breathing matters more than most parents are told
Noses warm, filter and humidify air and produce nitric oxide that helps oxygen reach the body. Mouths do none of that. When a child breathes through the mouth day and night, the tongue drops from the roof of the mouth, the upper jaw grows narrower, the face grows longer, teeth crowd, sleep becomes lighter and the child wakes tired. Over years, that shows up as orthodontic relapse, snoring, bedwetting, daytime attention problems and speech errors such as a lisp.
We cover the research behind those risks in “Mouth Breathing Is Normal,” Said No Expert Ever. This article focuses on the practical side: how to tell, what causes it, and how it is treated.
Signs your child is a mouth breather
Mouth breathing is easy to miss because it looks like a child “just relaxing.” Check for these during the day and at night.
During the day
Lips apart at rest while watching a screen, reading or riding in the car
Dry, chapped lips or a dry mouth in the morning
Tongue visible between or behind the front teeth at rest
Noisy or messy eating, chewing with the mouth open
Frequent sore throats, bad breath or dark circles under the eyes
A long, narrow face, a high narrow palate or crowded teeth
Speech errors such as a frontal lisp (th for s)
At night
Snoring, heavy breathing or pauses in breathing
Restless sleep, sweating, unusual positions (neck extended, sitting up)
Drooling on the pillow
Bedwetting past the age it usually resolves
Hard to wake, grumpy or hyperactive during the day
Two or more of these, most days, is enough to warrant an evaluation. You do not need to wait for a dentist or teacher to point it out.
What causes mouth breathing in children?
Nasal obstruction
Allergies, chronic congestion, enlarged adenoids or tonsils, a deviated septum or narrow nasal passages can make nose breathing hard work. If the nose is blocked, no amount of reminding will keep a child’s mouth closed. This is why an ENT or allergy evaluation is often the first step.
Habit that outlasts the blockage
Many children keep mouth breathing long after the allergies are controlled or the adenoids are removed. The muscles have learned a new resting position: tongue low, lips apart, jaw dropped. The body does not reset on its own; it has to be retrained.
Low tongue posture and weak lip seal
Proper tongue posture means the whole tongue rests against the roof of the mouth with the lips closed. When the tongue rests low, it stops supporting the upper jaw and the lips drift open. Weak lip and cheek muscles make it tiring to keep the mouth closed, so the child does not.
Tongue tie
A restricted lingual frenulum can physically prevent the tongue from reaching the palate. In those children, myofunctional therapy before and after a tongue-tie release is what makes nasal breathing possible.
Narrow palate and crowded teeth
A high, narrow palate leaves less room for the tongue and a smaller nasal floor, so the airway is tighter. Orthodontic expansion can create space, but the tongue still has to learn to use it.
Mouth breathing treatment options compared
There is no single “mouth breathing treatment.” Effective care matches the treatment to the cause, and most children need more than one of the options below. The table shows how they fit together.
Treatment | What it addresses | Who provides it | When it is needed |
Allergy and ENT care (allergy management, nasal sprays, adenoid or tonsil evaluation) | A physically blocked nose | Pediatrician, allergist, ENT | First, whenever the child cannot comfortably breathe through the nose for a few minutes with lips closed |
Orthodontic or airway-focused dental care (palatal expansion, growth guidance) | A narrow upper jaw and small nasal airway | Orthodontist or airway-trained dentist | When the palate is high and narrow or teeth are crowding; usually alongside therapy so results hold |
Orofacial myofunctional therapy | The habit itself: tongue rest posture, lip seal, nasal breathing and a correct swallow | Speech-language pathologist or certified orofacial myologist | Almost always; it is the part that turns a clear airway into a child who actually breathes through it, day and night |
Tongue-tie release (frenectomy) with therapy before and after | A tongue that cannot reach the palate | Dentist or ENT, with myofunctional therapy | When restriction is confirmed on evaluation |
Mouth taping | Keeps lips closed during sleep | Self-directed (adult trend) | Not recommended for children without a professional evaluation; taping a child who cannot breathe well through the nose is unsafe and does not retrain the muscles |
How myofunctional therapy stops mouth breathing
Orofacial myofunctional therapy is a structured program of exercises and habit training for the muscles of the face, mouth and throat. For mouth breathing, the program targets four goals in order.
Nasal breathing. Clearing and conditioning the nose, then building the endurance to breathe through it at rest, during play and during sleep.
Lip seal. Strengthening the lips and cheeks so a closed mouth is comfortable rather than effortful.
Tongue rest posture. Teaching the whole tongue to rest against the palate, which supports the upper jaw and keeps the airway open.
Correct swallow. Replacing a tongue-thrust swallow with a mature pattern so the new posture holds hundreds of times a day.
Sessions are short, exercises take a few minutes a day at home, and progress is measured. Most children begin with weekly visits, then taper as the new habits become automatic. Because the same clinician is a speech-language pathologist, any related speech errors are treated in the same program.
At Mequon Speech and Learning Connection, this work is led by Milwaukee’s only IAOM Certified Orofacial Myologist, and we coordinate directly with your child’s ENT, allergist or orthodontist so that medical, dental and muscle treatment happen in the right order.
What parents can do at home starting today
Do the nose test. Ask your child to close their lips and breathe through the nose for two minutes while watching a show. If they cannot, start with the pediatrician or ENT.
Manage allergies and congestion with your doctor: saline rinses, bedroom allergen control, treating reflux if present.
Use one cue, not nagging. A quiet “lips together, tongue up” works better than “close your mouth” repeated all day.
Watch posture. A forward head and slumped shoulders during screen time pull the jaw open. Feet supported, screen at eye level.
Model it. Children copy the breathing they see. Keep your own lips closed at rest.
Skip mouth tape for kids. If the nose is not fully open, taping is unsafe, and it does not fix the muscle habit.
Book an evaluation if signs persist for more than a few weeks or you see snoring, pauses in breathing or daytime fatigue.
Mouth breathing treatment in Milwaukee: what to expect at Mequon Speech
Your first visit is a comprehensive orofacial myofunctional evaluation. We look at nasal patency, lip and tongue strength and range, tongue rest posture, swallowing pattern, oral habits such as thumb sucking, dental and palate shape, and any signs of a tongue tie. You leave with a clear explanation of what is driving the mouth breathing, which other professionals (if any) should be involved, and a therapy plan with specific goals.
We treat children, teens and adults at our clinic at 1025 W. Glen Oaks Lane, Suite 107 in Mequon, serving families from Milwaukee, Glendale, Whitefish Bay, Fox Point, Bayside, River Hills, Cedarburg, Grafton, Germantown and Menomonee Falls. Teletherapy is available for many families across Wisconsin. Explore our pediatric myofunctional therapy program or, for adults who snore or wake unrefreshed, our adult myofunctional therapy.
Frequently asked questions about mouth breathing in children
Can mouth breathing be corrected?
Yes. Once any nasal blockage is treated, orofacial myofunctional therapy retrains nasal breathing, lip seal and tongue posture. Children who complete therapy typically keep the new pattern because the muscles, not just the reminders, have changed.
At what age should mouth breathing be treated?
The earlier the better, because facial growth is fastest in early childhood. Formal myofunctional therapy usually begins around age 4 to 6 when children can follow exercise routines, but younger children benefit from early evaluation, habit work and medical treatment of the airway.
Is mouth breathing the same as sleep apnea?
No, but they are related. Mouth breathing is a sign that the airway is not working well; sleep-disordered breathing and obstructive sleep apnea are diagnoses made by a physician, often with a sleep study. If your child snores, gasps or has pauses in breathing, tell your pediatrician and ask about a referral.
Will fixing the adenoids or allergies stop the mouth breathing on its own?
Sometimes, but often not. If the habit has been in place for months or years, the muscles need retraining after the airway is cleared. That is the gap myofunctional therapy fills.
Does myofunctional therapy replace braces or a palatal expander?
No. They do different jobs. Expansion creates space; therapy teaches the tongue to use it and keeps the result stable. Many orthodontists in the Milwaukee area refer to us for exactly that reason.
Think your child is a mouth breather? Schedule a myofunctional evaluation in Mequon or call 262-302-4166. Mequon Speech and Learning Connection (Milwaukee Myo) treats children and adults from across the greater Milwaukee area, in person and by teletherapy. Contact us.
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