Why Mouth Breathing During Sleep Is Harmful for Children

July 3, 2025

When you see your child sleeping with their mouth open, it might seem innocent or even adorable. However, mouth breathing during sleep is not normal and can have serious consequences on your child's development.


At MyoWay Center for Kids, we help parents understand the impact of mouth breathing and how early intervention through myofunctional therapy can make a lifelong difference.


The Problem with Mouth Breathing

Breathing through the mouth while asleep may look harmless, but it is a sign that something is not working properly in your child's airway and jaw development. Mouth breathing is often a result of an underdeveloped jaw, which can lead to improper tongue posture and restricted nasal breathing. This pattern of breathing affects much more than just how your child looks while sleeping.


Effects on Jaw and Facial Development

Children who regularly breathe through their mouth at night tend to develop narrow jaws and longer facial structures. This happens because the tongue is not positioned correctly against the roof of the mouth to help shape the upper jaw during growth.

As the jaw becomes underdeveloped, there is not enough room for all of the permanent teeth to come in correctly, which leads to crooked teeth and often results in the need for orthodontic treatment later on.


Brain Growth and Sleep Quality

Mouth breathing also affects how well your child sleeps. Poor sleep caused by an obstructed airway can lead to oxygen deprivation during crucial periods of brain development. This lack of proper oxygen flow may contribute to attention difficulties, behavioral challenges, and learning struggles. What may be mistaken for attention issues or hyperactivity could actually be a sign that your child is not sleeping deeply or getting the rest their body and brain need.


Why Early Intervention Matters

The earlier these signs are recognized and addressed, the better the outcome for your child. Myofunctional therapy is a proven approach that uses gentle exercises and medical-grade tools to support proper jaw growth, tongue posture, and nasal breathing.


At MyoWay, we create customized programs that guide children toward better sleep, improved focus, and lifelong health.


Take the Next Step

Mouth breathing during sleep is not just a habit to grow out of. It is a signal that your child needs support for healthy growth and development. If you notice your child breathing through their mouth at night, snoring, grinding their teeth, or waking up tired, it is time to act.


Book a free consultation today to learn how MyoWay can help your child breathe better, sleep better, and grow stronger.


https://mychart.myoryx.com/patient/#/auth/onlineschedule?realm=myoway&univers=com




child sleeping in bed
June 27, 2025
Discover how mouth breathing affects your child's bladder control and how myofunctional therapy can help stop bedwetting for good.
June 20, 2025
Learn why the majority of facial growth happens by age six and how early habits in infancy impact jaw, airway, and brain development. Discover how MyoWay supports healthy growth through early myofunctional care.
baby sleeping
June 11, 2025
Learn how to spot sleep-disordered breathing in children. Discover key warning signs and how MyoWay’s early intervention approach helps improve sleep, breathing, and development.
logo
June 6, 2025
Discover how poor breathing patterns can lead to behavioral issues in children. Learn how MyoWay’s myofunctional therapy helps improve sleep, focus, and behavior.
logo
May 30, 2025
Even after tonsils or adenoids are removed, mouth breathing can continue due to habit. Learn how MyoWay’s myofunctional therapy retrains breathing patterns and supports healthy development.
carrots
May 23, 2025
Learn how modern diets with soft foods are affecting jaw development in children. Discover how chewing and myofunctional therapy can improve growth, sleep, and breathing.
May 16, 2025
Proper jaw posture is essential for healthy jaw development in children. When the mouth remains open continuously, it can place stress on the muscles that support the jaw joint. This can lead to issues such as clicking, popping, and jaw pain. Addressing these problems early can prevent long-term complications.
baby
May 8, 2025
Discover how thumb sucking can alter a child’s facial development and breathing. Learn the importance of early intervention and how MyoWay’s therapy helps guide healthy growth.
picture from 1800s
May 2, 2025
George Catlin warned about mouth breathing back in the 1800s. Discover why his message is more relevant than ever and how early myofunctional therapy can help kids today.
John Stamos
April 15, 2025
A strong jawline might be pleasing to look at, but at MyoWay, we see it as a sign of optimal development. If your child shows signs of poor jaw growth or struggles with sleep, behavior, or breathing, it may be time for an evaluation.
More Posts