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Can a Child's Tongue Posture Affect Facial Growth and Tooth Alignment?
Understanding an often-overlooked part of oral, dental and facial development through tongue posture, breathing and swallowing habits.
From HiParents: When parents think about their child's oral health, brushing, cavities and the possible need for braces often come to mind. Yet how a child breathes and swallows, and where the tongue rests, can also offer useful clues about development. HiParents invited Dr Caren to explain this topic in clear, parent-friendly language.
Why Should Parents Pay Attention to Tongue Posture?
Tongue posture refers to the tongue's natural resting position when a child is not speaking or eating. Because the tongue spends long periods at rest, its position may be associated with oral muscle function, breathing patterns, and dental and jaw development.
Children typically sleep for about 8 to 12 hours a day. Whether the mouth remains open during sleep, whether breathing occurs through the nose, and where the tongue rests may therefore be useful considerations when assessing oral function.
An Ideal Resting Pattern
- Lips rest gently together
- Breathing occurs through the nose
- The tongue rests lightly against the roof of the mouth
This pattern may provide appropriate support for the upper jaw and encourage more coordinated oral function.
Areas That May Be Related
- Upper and lower jaw development
- Facial and dental arch growth
- Nasal breathing and swallowing patterns
- Breathing during sleep and daily activities
What Signs Can Parents Look For?
- Frequent mouth breathing, noisy breathing or snoring during sleep
- Thumb-sucking that continues beyond the toddler years
- The tongue pushes forwards against the teeth when swallowing (tongue thrust)
- The front teeth do not meet normally, such as an open bite
- Crowded teeth or an upper jaw that appears narrow
What Is Myofunctional Therapy?
Myofunctional therapy is a structured programme of exercises that focuses on tongue function, lip strength, facial muscle coordination, swallowing patterns and breathing habits.
Possible Training Goals
- Establish an appropriate resting tongue position
- Encourage nasal breathing
- Support a natural lip seal
Supporting Oral Function
- Improve swallowing function
- Develop oral muscle coordination
- Complement selected early orthodontic care
For some children, myofunctional therapy may complement early orthodontic care by addressing oral habits that could affect tooth alignment, rather than focusing only on straightening teeth. A qualified professional should assess whether the programme is appropriate for an individual child.
Why Is an Early Orthodontic Assessment Recommended?
Many parents believe that they should wait until all permanent teeth have erupted before consulting an orthodontist. In fact, the American Association of Orthodontists (AAO) recommends an initial orthodontic check-up around age seven.
An Assessment Does Not Mean Immediate Braces
- Monitor jaw and tooth development
- Identify bite concerns early
- Consider simpler intervention when needed
- Provide guidance at an appropriate stage of growth
Early identification can help a dentist or orthodontist plan the right time for observation or treatment. It does not mean that every seven-year-old needs orthodontic treatment immediately.
How Can Parents Help at Home?
Alongside regular dental check-ups, parents can observe everyday patterns at home. The aim is not to correct a child constantly, but to notice whether concerns involving breathing, sleep, swallowing or oral habits continue over time.
Helpful Everyday Observations
- Notice whether the child often breathes through the mouth
- Observe whether the lips can rest together naturally
- Pay attention to the tongue's usual resting position
- Offer age-appropriate natural foods with texture for chewing
- Build a regular, healthy sleep routine
When to Consider Professional Assessment
- Persistent mouth breathing or sleeping with the mouth open
- Frequent snoring or noticeably noisy breathing
- Long-term thumb-sucking
- Difficulty swallowing or chewing
- Crowded teeth or an unusual bite
Every Child Develops Differently
Not every child who breathes through the mouth, sucks a thumb or has an unusual tongue posture requires treatment. A professional assessment helps determine whether a pattern is part of normal development, should be monitored, or may benefit from further intervention.
Parents who have concerns about their child's breathing, oral habits, swallowing or dental development can consult a dentist experienced in children's growth and development for individualised advice.
About Our Guest Doctor
Dr Caren
Lwi Yee Chin
DDS (UKM)
MFDS RCS (Edinburgh)
Principal Dentist, Aloha Dental JB (Taman Pelangi)
Dr Caren has a clinical interest in children's oral development, interceptive orthodontics, myofunctional therapy and airway-focused dentistry.
Through early assessment, preventive care and evidence-based dentistry, she aims to support healthy breathing habits, appropriate oral function and balanced jaw development in children.
HiParents Expert Medical Insights
HiParents invites doctors and child-development professionals with relevant expertise and practical experience to explain health topics that matter to parents in a clear, trustworthy and accessible way. Our content supports parent education while recognising the importance of professional judgement and individual assessment.
Professional References
- American Association of Orthodontists：Child Orthodontics
- American Academy of Pediatric Dentistry：Management of the Developing Dentition and Occlusion
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