If your child breathes through their mouth during the day or night, that alone is reason enough to book an airway and oral function assessment. Mouth breathing is linked to disturbed sleep, attention and behaviour changes often mistaken for ADHD, and altered face and jaw growth that leads to dental crowding. The American Academy of Paediatrics advises that children who frequently snore should be evaluated, with sleep testing where indicated. The American Academy of Paediatric Dentistry expects dental teams to screen and refer accordingly.
The 12 early signs to look out for
1. Mouth open at rest
A child who consistently sits with lips apart during reading, screen time, or quiet activities is showing a key sign. Mouth breathing at rest is directly linked to changes in jaw and facial growth as well as oral health.
2. Recurrent throat infections
Frequent tonsillitis or adenoiditis, or persistently enlarged tonsils and adenoids, can narrow the airway and drive mouth breathing, particularly at night.
3. Stuffy or blocked nose most days
Chronic nasal congestion pushes children toward mouth breathing and can create a cycle of poor sleep and altered facial growth.
4. Underdeveloped face or jaw
A flatter midface, retrusive chin, or long lower face can reflect growth patterns influenced by chronic mouth breathing and low tongue posture.
5. Tongue between teeth during speech or eating
An interdental tongue thrust often accompanies mouth breathing and low tongue posture, affecting bite development and contributing to crowding.
6. Avoidance of hard or chewy foods
A strong preference for very soft textures can signal low oral function or chewing fatigue, both of which benefit from early assessment and coaching.
7. Difficulty sitting still or poor concentration
Sleep-disordered breathing can closely mimic ADHD. Many children show meaningful improvement in attention and behaviour after airway treatment.
8. Bed-wetting
In some children, nocturnal enuresis accompanies sleep-disordered breathing and frequently improves once the airway issue is addressed.
9. Waking unrefreshed, dry throat, or dark circles
Poor quality sleep shows up as tired mornings, a sore or dry throat on waking, and under-eye circles that can look like allergies, even when nights appeared quiet.
10. Early crowding with little or no spacing at ages 4 to 6
Lack of spacing between baby teeth can be a red flag. Mouth breathing and low tongue posture are both associated with malocclusion and altered jaw growth.
11. Forward head or slumped posture
Children sometimes crane the head forward to open the airway. Posture and breathing are closely connected and can reinforce each other over time.
12. Snoring or loud breathing on most nights
Frequent snoring is not normal in children and should be evaluated. Sleep testing with polysomnography is the gold standard when indicated.
What parents can do this week
Observing your child for seven nights and noting mouth-open sleep, restlessness, snoring, or pauses in breathing is a useful starting point. Candid daytime photos during quiet activities can also reveal whether the lips are consistently apart and the tongue is resting low. A consistent sleep and wake schedule and gentle nasal hygiene where appropriate can support better nasal breathing in the short term.
When to book an assessment now
An assessment should not be delayed if your child snores three or more nights per week or if you have witnessed pauses or gasps during sleep. Inattention or behaviour concerns combined with mouth-open posture, chronic nasal blockage, early dental crowding, a tongue-thrust swallow pattern, or bed-wetting alongside other airway signs are all clear reasons to seek a professional evaluation promptly.
If your child shows any of the signs above, contact Vilafortuny to arrange an assessment and discuss the right next steps for your family.
