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Can enlarged tonsils and adenoids affect facial growth?

Enlarged tonsils and adenoids may contribute to mouth breathing, poor sleep, and altered facial development.

Stephen Deal, DDS1 min readPublished July 14, 2026

Enlarged tonsils and adenoids can affect more than breathing comfort. If they contribute to chronic mouth breathing or poor sleep during growth, they may also influence facial development over time.

The short answer

They can. Enlarged tonsils and adenoids may contribute to mouth breathing, snoring, restless sleep, and growth patterns that affect the face and jaws.

Why it happens

  • Soft tissue crowding can make airway function less efficient.
  • Children may compensate with open-mouth posture.

Why it matters

Poor breathing and poor sleep during growth can affect development.

What most people miss

Opening the airway and guiding growth are not always the same thing. Both may need attention.

What to do next

Ask whether breathing, sleep, and facial growth are all being evaluated together.

Take the next step

Spotted something? See an airway-aware dentist.

Symmetry Modern Dentistry in Little Rock offers airway-aware evaluations for children and adults. Out of state? The sleep-apnea screening quiz is a free place to start.