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How Breathing Shapes Growing Faces
Michael Bennett, DDS, PhD
Good morning. This is More Than Teeth. The newsletter that helps dental sleep professionals get 1% better every week.

Good morning.
Have you ever wondered how breathing affects your child's future? Nose breathing supports facial growth, dental health, and lifelong breathing by guiding the upper jaw to grow properly. In contrast, mouth breathing can lead to crowded teeth, narrow arches, and ongoing breathing issues.
In today’s edition of More Than Teeth with Dr. Mike Bennett:
How Nasal Breathing Promotes Healthy Facial Growth: Learn how proper tongue posture during nasal breathing expands the jaws, supports airway development, and ensures space for healthy teeth.
The Hidden Risks of Mouth Breathing in Children: Chronic mouth breathing can narrow the dental arch, restrict the airway, disrupt sleep, and lead to health, behavior, and learning challenges.
The Case for Early Intervention: Prioritize Breathing Over Braces
Learn why expanding a child's airway early on is essential for their health. Developing good breathing habits before worrying about braces or appearance is better.
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Key Takeaways🔑
Nasal breathing is essential for proper jaw growth, airway development, and stable dental arches.
Mouth breathing during childhood can lead to crowded teeth, narrow airways, and future health challenges.
Early airway-focused intervention supports healthier growth, better sleep, and reduces the need for complex orthodontics.
Dr. Bennett’s Patient Spotlight: A Healthier Smile, A Healthier Child
Before treatment, this young patient struggled with a narrow dental arch, chronic mouth breathing, allergies, asthma, and nighttime bedwetting (enuresis).
Photographs and CBCT imaging revealed oral crowding and a constricted airway.

Before and After CBCT Scans of Patient

Before and After Photos of Patient
After 6 months of airway expansion therapy using a growth guidance appliance:
Bedwetting completely resolved
Allergic symptoms reduced
Sleep quality improved
Speech and sensory issues decreased
Activity levels and daytime energy significantly increased
After 15 months of treatment:
Airway volume more than doubled
The minimum cross-sectional airway area increased by over 30%
Nasal breathing was restored as the child’s default
Facial profile improved, with more balanced jaw growth
Dental arch widened, reducing crowding and improving tongue space
Allergy symptoms further decreased
No longer needed allergy or asthma medications
Nighttime sleep became fully restorative (no more restless sleep or night sweats)
Attention span and school performance improved noticeably
Higher confidence and better social interaction are reported by parents and teachers
Healthy breathing is essential for growth. Research indicates that nasal breathing supports proper jaw development and aligned teeth. In contrast, mouth breathing, often due to allergies or enlarged tonsils, can lead to narrow arches and sleep-disordered breathing. Studies confirm that pediatric obstructive sleep apnea is linked to impaired facial growth. Early identification and airway-focused interventions are crucial for a child's development and well-being.
"Expand the airway first, and you change not just the teeth—but the trajectory of a child's whole life." Michael Bennett, DDS, PhD
Business of Sleep
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Early expansion isn’t just a dental service anymore — it’s becoming a whole-health intervention. Practices that offer airway assessments and pediatric expansion protocols are positioning themselves at the forefront of the growing movement to redefine orthodontics through the lens of sleep and systemic wellness.
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Event | Dates | Location | Link |
---|---|---|---|
Introduction to Sleep and Airway Medicine | May 15-17, 2025 | Denver, CO | Click Here |
2025 AADSM Annual Meeting | May 16-18, 2025 | Las Vegas, Nevada | |
SLEEP 2025 | June 8-11, 2025 | Seattle, WA | |
Guided Growth & Development | June 12-14, 2025 | Denver, CO | Click Here |
Sleep Group Solutions | June 20-21, 2025 | Hollywood, FL |
Have an event you would like to post? (free) [ click here ]
Miscellaneous
😅P.S. … At More Than Teeth, healthy breathing builds healthy futures.
If you know a parent, teacher, or coach who would benefit from this information, please forward this newsletter — together we can help every child grow into their brightest, healthiest self.
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