Why Teeth Grinding in Children Is Not “Just a Phase”
What’s That Sound?
If you’ve ever heard your child grinding their teeth at night, you may have wondered if it’s simply a growth habit they’ll outgrow. While pediatric teeth grinding—also known as bruxism—is common, it’s often more than just a habit. In many cases, it can be an important signal that a child’s body is under stress during sleep.
At Link Dental, we believe understanding why bruxism happens is just as important as treating its effects.
The Neurological Link Between Teeth Grinding and Sleep
Teeth grinding is not a random or unconscious behavior. It is a highly coordinated neurological response involving the trigeminal nerve, which supplies sensation and motor control to much of the face and jaw. This nerve is closely connected to the brainstem—an area responsible for breathing, autonomic regulation, and arousal from sleep.
Because of this connection, pediatric bruxism is most often observed during sleep, particularly as a child transitions into REM or near-REM sleep. During these stages, the body is meant to rest, recover, and grow.
When Breathing Becomes a Problem at Night
During healthy sleep, the body enters a state dominated by the parasympathetic nervous system, sometimes referred to as “rest and digest.” Heart rate slows, cortisol levels drop, and growth hormone is released—critical for childhood development.
However, if a child experiences airway restriction or reduced oxygen levels, the brain perceives this as a threat. In response, it switches into sympathetic or “fight-or-flight” mode. When the upper airway is crowded, congested, or partially blocked, the body may respond with sudden or forceful jaw movements—teeth grinding—to help reopen the airway and restore airflow.
These repeated arousals can prevent deep, restorative sleep. Over time, disrupted sleep may contribute to:
- Fatigue and poor focus
- Mood and behavioral changes
- Increased susceptibility to illness
- Delayed physical growth and development
What Research Tells Us About Pediatric Bruxism
A growing body of research supports the link between teeth grinding, sleep-disordered breathing, and physiologic stress in children. Dr. Michael Bennett and his spouse and colleague Cathy Bennett, through their More Than Teeth newsletter for oral health professionals, highlight pediatric bruxism as one of the earliest visible signs of nighttime stress.
Peer-reviewed studies have shown strong correlations between:
- Bruxism and sleep arousals
- Bruxism and breathing disturbances
- Sleep quality and growth hormone regulation
- Sleep-disordered breathing and cardiovascular or neurological changes in children
In one compelling case study, a very young child experiencing significant neurological dysfunction was eventually diagnosed with obstructive sleep apnea (OSA). Once the airway issue was treated, the child made a nice recovery. The clue that led clinicians in the right direction? Chronic teeth grinding during sleep.
Teeth Grinding Is a Defense Mechanism—Not a Bad Habit
The key takeaway is this: the body adapts to stress to survive. Bruxism is one of those adaptations. When oxygen levels drop, the body will do whatever it can to restore balance. Over time, though, these compensations can wear the system down.
In children, this may show up as:
- Poor sleep quality
- Growth and developmental challenges
- Mood or attention issues
- Chronic health concerns
Recognizing teeth grinding early allows families and providers to address potential underlying causes—not just the damage to the teeth.
How Link Dental Supports Your Child’s Oral and Overall Health
At Link Dental, we take a comprehensive approach to oral health because the mouth plays a critical role in overall wellness. Both children and adults can experience abnormal sleep patterns and parafunctional habits like bruxism.
As part of our care, we routinely:
- Screen for teeth grinding and clenching
- Discuss sleep habits and breathing concerns
- Evaluate jaw joint function
- Review medical and health history
By combining this information, we help create a personalized oral health plan that supports better sleep, healthier development, and long-term wellness.
Concerned About Your Child’s Teeth Grinding?
If your child grinds their teeth regularly or shows signs of poor sleep, we encourage you to reach out. Early evaluation can make a meaningful difference.
📞 Call Link Dental at 303-773-8262
🌐 Schedule online at www.linkdentalcolorado.com
Your child’s sleep—and health—are worth it. 🦷💙
