What Mouth Breathing Is Really Doing To Your Child's Teeth

April 7, 2026
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Posted By: Katie To, DDS

Why Mouth Breathing Matters

When a child breathes through their mouth instead of their nose, it reduces saliva in the mouth. 

Saliva is protective!

Saliva neutralizes acids, washes away bacteria, and helps remineralize teeth. 

Without enough saliva, the mouth becomes dry and more acidic - which is exactly what harmful bacteria thrive in. 

Mouth breathing contributes in creating this dry and acidic environment.

We are able to see if plaque is acidic (turquoise) and how long it has been there, by using a disclosing solution. 

Follow along for more guidance on supporting your child's oral health.