Many parents are surprised the first time they hear their child grinding their teeth during sleep. The sound can be loud enough to wake other family members, and it often raises concerns about damage to the teeth. While occasional teeth grinding, also known as bruxism, can occur during childhood, persistent or frequent grinding should not simply be dismissed as a normal phase that children will outgrow. Increasingly, airway-focused practitioners recognise that teeth grinding may be the body's attempt to respond to disrupted breathing during sleep. Rather than being solely a dental problem, grinding may be one of several signs that a child is working harder to keep their airway open throughout the night.
At Holistic Smiles Kids, we believe that every symptom deserves to be understood in the context of the whole child. Teeth grinding is often one piece of a much bigger picture involving breathing, sleep quality, jaw development, tongue posture and overall growth. Looking beyond the teeth allows us to better understand why the grinding is occurring and how to support healthier development rather than simply managing the symptom.
What is teeth grinding?
Bruxism is the involuntary clenching, grinding or rubbing together of the teeth, most commonly during sleep. Some children grind only occasionally, while others may do so every night. Parents often hear a loud scraping noise coming from their child's bedroom or notice that the teeth appear worn down over time.
Although mild grinding may occur during periods of growth, frequent or persistent bruxism deserves further investigation. Grinding places excessive pressure on developing teeth and jaw joints and may lead to worn enamel, chipped teeth, tooth sensitivity, headaches, jaw discomfort and muscle fatigue. More importantly, it may provide valuable clues about what is happening elsewhere in the body while the child sleeps.
Why do children grind their teeth?
There is no single cause of childhood bruxism. Emotional stress, certain medications and neurological conditions may all contribute in some children. However, growing evidence suggests that sleep-disordered breathing and airway restriction may also play an important role.
When the airway narrows during sleep, the brain constantly monitors oxygen levels and breathing effort. If airflow becomes restricted, the body activates protective reflexes to help reopen the airway. One of these responses involves briefly activating the jaw muscles. Grinding or clenching may move the lower jaw slightly forward, increasing the space behind the tongue and temporarily improving airflow.
In other words, for some children, teeth grinding may represent the body's attempt to breathe more easily during sleep rather than simply being a habit involving the teeth.
The connection between the airway and the jaws
Healthy jaw development plays an important role in healthy breathing.
During normal nasal breathing, the tongue rests gently against the roof of the mouth. This natural position supports proper development of the upper jaw, creating adequate space for both the airway and the permanent teeth.
When a child habitually breathes through their mouth, the tongue rests low in the mouth instead. Without the gentle support of the tongue, the upper jaw may become narrower during growth. As the jaw narrows, the roof of the mouth often becomes higher, leaving less room for the nasal airway and the tongue.
This reduced airway space may make breathing during sleep more difficult. In response, the body works harder to maintain airflow, and grinding may become one of the protective mechanisms used to keep the airway open.
This is why children who grind their teeth often also display other signs of airway dysfunction.
Common signs that may occur alongside teeth grinding
Children who experience persistent bruxism frequently present with several other symptoms, including:
- Mouth breathing during the day or night
- Habitual snoring
- Restless sleep
- Frequent waking
- Sleeping with the mouth open
- Dark circles beneath the eyes
- Dry mouth on waking
- Crowded teeth
- Narrow upper jaws
- High-arched palate
- Enlarged tonsils or adenoids
- Difficulty concentrating
- Hyperactivity
- Daytime fatigue
- Mood changes
When these symptoms occur together, they may suggest that breathing and sleep quality deserve further assessment.
Why sleep quality matters
Sleep is one of the body's most important periods for healing and development. During deep sleep, the brain processes learning, regulates emotions, releases growth hormone and repairs tissues throughout the body.
When breathing is repeatedly interrupted because the airway is partially blocked, sleep becomes fragmented. Even if children remain asleep for the recommended number of hours, they may never spend enough time in the deepest restorative stages of sleep.
Poor-quality sleep can affect many aspects of childhood development, including:
- Learning and memory
- Emotional regulation
- Behaviour
- Growth
- Immune function
- Energy levels
- School performance
Teeth grinding may therefore be one of several signs indicating that the child is not achieving the quality of sleep their growing body requires.
Looking beyond the teeth
Traditionally, treatment for teeth grinding has focused on protecting the teeth from wear, often using mouthguards. While protecting teeth may be appropriate in some situations, it does not necessarily address why the grinding is occurring.
A holistic approach asks a different question: "Why is this child grinding their teeth in the first place?"
If grinding is being driven by poor breathing during sleep, simply covering the teeth does not resolve the underlying issue.
Instead, assessment may include looking at:
- Breathing patterns
- Tongue posture
- Jaw development
- Airway size
- Sleep quality
- Oral muscle function
- Nasal breathing
- Growth and facial development
Understanding these relationships allows treatment to focus on improving function rather than simply reducing symptoms.
Supporting healthy breathing and development
One of the greatest advantages of childhood is that the jaws and facial bones are still growing.
Supporting healthy nasal breathing, proper tongue posture and balanced jaw development during these years may encourage healthier airway development while natural growth is occurring.
Depending on each child's individual needs, recommendations may include:
- Encouraging nasal breathing
- Improving tongue posture
- Myofunctional therapy
- Addressing oral muscle function
- Managing nasal obstruction where appropriate
- Monitoring enlarged tonsils or adenoids with the child's medical practitioner
- Airway-focused orthodontic guidance when indicated
- Healthy sleep routines
- Good nutrition and hydration
Each child requires an individual assessment, and management should always be tailored to their specific needs.
A holistic approach at Holistic Smiles Kids
At Holistic Smiles Kids, we believe teeth grinding should never be viewed as simply a dental problem. Instead, it may be an important clue that the body is working harder than it should during sleep.
Our approach considers how breathing, airway health, jaw development, tongue posture, sleep quality and oral habits all work together to influence a child's wellbeing. By identifying concerns early, we can help guide healthy jaw growth and support the natural development of the airway while children are still growing.
Rather than focusing solely on worn teeth, we aim to understand the reason behind the grinding and create a personalised plan that supports the whole child.
Every child deserves peaceful sleep
Persistent teeth grinding is not something parents should ignore. While it does not always indicate a serious problem, it may be one of the earliest signs that a child's airway deserves further attention.
If your child grinds their teeth regularly, snores, breathes through their mouth, sleeps restlessly or struggles with daytime fatigue, an airway assessment may provide valuable answers.
Healthy breathing supports healthy sleep, and healthy sleep supports healthy growth. By addressing the underlying causes rather than simply treating the symptoms, families can help children enjoy better sleep, healthier jaw development, improved breathing and a stronger foundation for lifelong health.