Conditions / Facial development & growth patterns
Facial development & growth patterns
How the face grows — jaw width, palate shape, airway space — is shaped early by posture and habits. Therapy can support the patterns that lead to healthier development in children, and address the habits that maintain long-standing patterns in adults.
Reviewed by Gina Sabbak, RDH · Myofunctional Therapist, Louisville KY. Last reviewed . Educational content — not a substitute for in-person evaluation.
What it is
Craniofacial growth is influenced by a small set of consistent forces: tongue posture against the palate, lips closed at rest, nasal breathing, and a mature swallow. When those forces are present, the face tends to develop with a broad palate, well-aligned teeth, and an open airway.
When those forces are absent — from chronic mouth breathing, low tongue posture, or prolonged oral habits — the face tends to grow long, the palate narrows, the teeth crowd, and the airway narrows. This is sometimes called ‘long-face syndrome’ in the literature, though we use plain language here.
Common signs
- Narrow or high-arched palate
- Crowded or crooked teeth
- Mouth breathing or lips-apart-at-rest posture
- Long, narrow facial shape in children
- Frequent nasal congestion or allergy symptoms
- Snoring or restless sleep in children
How myofunctional therapy may help
Educational, not diagnostic. Outcomes vary; results are not guaranteed.
Establish correct tongue-up posture and lip seal so the palate and dental arch develop under balanced forces.
Restore nasal breathing as the default, with coordination with your allergist or ENT when structural issues are present.
Eliminate prolonged oral habits (thumb, finger, pacifier) that shape growth.
What to expect
For children, programs run 6–9 months and work best while facial growth is still active.
For teens and adults, therapy addresses the muscle and habit side; structural change is coordinated with your dental or medical team.
Coordination with an orthodontist, ENT, or allergist is often part of the plan.
Keep learning
Related reading
- Mouth breathing in children: why it matters
Educational article (~5 min read).
- Breathing Retraining
How this service supports this condition.
- All conditions we work with
The full set of myofunctional patterns we support.
- How we may help
Overview of the assessment and program structure.
Common questions about facial development & growth patterns
- Can myofunctional therapy change facial growth in children?
- Myofunctional therapy does not change growth on its own — growth is driven by genetics and overall health. What therapy can do is change the muscle and habit forces that shape how growth expresses itself: tongue-up posture against the palate, lips closed at rest, nasal breathing, and a mature swallow. When those forces are present during active growth, the palate tends to develop wider, the dental arches broader, and the airway more open. Coordinated care with an orthodontist, ENT, or allergist is often part of the plan.
- At what age is it too late to address facial development?
- It is rarely "too late" — but the window for working with active facial growth is the early years through early teens. After that, therapy addresses the muscle and habit side; structural change is coordinated with your dental or medical team. Many adults make meaningful improvements in breathing, sleep, jaw comfort, and stability of orthodontic results even when growth is complete.
- What is the best treatment for facial development concerns in Louisville?
- For children with growth-related concerns (long face syndrome, recessed chin, narrow palate, mouth breathing, adenoid face), the most effective approach is early multi-disciplinary care: myofunctional therapy to address the muscle-and-posture drivers, an orthodontist for arch development and expansion, an ENT for any airway obstruction, and an allergist if allergies are contributing to chronic mouth breathing. At 502 MYO in Louisville, we coordinate with each of these specialists. The earlier the intervention, the more we can work with active growth; older children and adults can still make meaningful improvements, but the structural changes require coordinated care.
- What does "mouth breathing face" mean?
- "Mouth breathing face" (sometimes called "adenoid face" or "long face syndrome") is the set of facial and dental development changes that can result from chronic mouth breathing during childhood. The features can include a long, narrow face, a small or recessed chin, crowded teeth, a high-arched palate, dark circles under the eyes, and an open-mouth posture at rest. The changes are not inevitable — they develop because of the muscle and posture patterns that come with chronic mouth breathing (low tongue posture, weak lip seal, no nasal breathing). Myofunctional therapy addresses the underlying muscle patterns, ideally before the developmental changes are fully set.
- Can my child's face change shape from mouth breathing?
- Yes — chronic mouth breathing during the years of active facial growth (roughly ages 3-12) is associated with measurable changes in facial structure. The tongue resting low in the mouth (rather than on the roof) reduces the gentle outward pressure that shapes the upper dental arch, leading to a narrow maxilla and crowded teeth. The open-mouth posture tends to elongate the lower face. The good news is that addressing the mouth breathing early — typically through a combination of medical care for any nasal obstruction, myofunctional therapy for the muscle patterns, and orthodontic intervention if needed — can support healthier facial development.
Open references
Where the illustrations come from
The anatomical illustrations on this page are drawn from openly licensed educational sources. We attribute them in the caption; the canonical sources are linked here for anyone who wants to verify or use them.