“Doctor, why does my child grind their teeth every night?” This is a question I hear quite often from parents, especially parents looking for a children’s dentist or airway dentist in Subang Jaya.
Sometimes the grinding is so loud that parents can hear it from the next room. Sometimes they notice that their child’s teeth are becoming worn or flattened. And sometimes they simply wake up wondering: Is this normal?
The usual explanations parents have heard are: Maybe it’s stress. Maybe it’s just a bad habit. Maybe it’s because of too much screen time. Some families may even wonder if there is a spiritual reason behind it. Because children grinding their teeth at night can be so persistent, parents often try to stop it themselves. They wake the child, shake them gently, or try to tell them to stop grinding. But a few minutes later, the child is asleep again and the grinding comes back.
So as an airway dentist in Subang Jaya, one of the questions I encourage parents to ask is slightly different: Why is my child grinding their teeth while they are asleep?
Because sleep bruxism in children is not simply a bad habit that a child consciously chooses to do. Sometimes, the grinding may be giving us a clue about what is happening during sleep.
What Is Sleep Bruxism in Children?
The medical term for teeth grinding during sleep is sleep bruxism. It refers to involuntary clenching, grinding or rhythmic jaw-muscle activity while a child is asleep. Your child is not consciously deciding: Tonight I’m going to grind my teeth.
It is an involuntary activity involving the brain, nervous system and muscles of the jaw. This is why simply telling a sleeping child to “stop grinding” usually doesn’t fix the problem. They may stop temporarily when they wake up, but once they fall asleep again, the grinding may return.
This is also why I would be careful about simply labelling children grinding their teeth at night as a bad habit. Sleep bruxism is considered multifactorial, which means there can be several contributing factors. Stress and anxiety can play a role. Sleep quality can play a role. Certain medications and neurological factors can play a role. And importantly, sleep-disordered breathing and airway problems in children may also be associated with sleep bruxism.
But Doctor, Isn’t Teeth Grinding Caused by Stress?
Stress can be one possible factor. Some children may grind more during periods of anxiety, emotional changes or poor sleep.
But if a child is grinding their teeth every night, especially when the grinding happens together with snoring, mouth breathing or restless sleep, I would not automatically assume that stress is the whole explanation. Research has found an association between sleep bruxism in children and sleep-disordered breathing.
This does NOT mean that every child who grinds their teeth has sleep apnea. And it does not mean that sleep apnea is always the cause of bruxism. The relationship is much more complicated.
But it does mean that persistent night-time teeth grinding can be one reason to look more closely at a child’s sleep and breathing. For parents in Subang Jaya, USJ, SS15, Bandar Sunway, Puchong and nearby areas, this is an important distinction to understand.
If your child is grinding every night, don’t only ask: How can I stop the grinding? Also ask: How well is my child sleeping and breathing?
The Question I Ask Parents: Does Your Child Snore?
This is where the conversation often becomes interesting. A parent may come in because of child teeth grinding at night. But when I ask about sleep, some say: Actually, yes… my child snores. Or she sleeps with her mouth open. Or he moves around so much at night. Or she always wakes up with a dry mouth.
These details matter. Because child snoring, mouth breathing and restless sleep can sometimes be signs of sleep-disordered breathing.
And in some children, sleep-disordered breathing can be associated with obstructive sleep apnea (OSA). Again, teeth grinding does not diagnose sleep apnea. But when children grinding teeth at night + snoring + mouth breathing + restless sleep occur together, I would want to understand what is happening with the child’s breathing during sleep.
This is something I commonly encourage parents to discuss when they are looking for a child dentist or airway dentist in Subang Jaya.
What Happens to a Child’s Airway During Sleep?
This is where the airway becomes important. When your child is awake, their brain is constantly controlling breathing. They swallow, move their tongue, adjust their jaw, change sleeping and sitting positions, or can consciously breathe through their nose.
But when your child falls asleep, the muscles supporting the upper airway naturally relax. For some children, this is completely normal. For others, the airway may become narrower during sleep.
There are many possible reasons. It could be related to enlarged tonsils and adenoids, chronic nasal congestion, could be allergies or nasal obstruction, child’s oral and facial growth pattern, it could also be associated with jaw development, a narrow upper jaw or other anatomical factors.
When airflow becomes restricted, the body does not simply ignore it. The brain continues monitoring breathing throughout the night. If breathing becomes disrupted, the nervous system can produce changes in muscle activity and brief arousals to help restore normal breathing. Most of the time, the child doesn’t fully wake up.
Parents may simply notice: snoring → movement → mouth opening → jaw movement → grinding → settling back to sleep. And this can happen repeatedly throughout the night.
Could Teeth Grinding Be the Body Trying to Open the Airway?
This is one of the most interesting questions surrounding sleep bruxism and airway problems.
The lower jaw, or mandible, is closely related to the tongue and the soft tissues surrounding the upper airway.
When the lower jaw moves forward, it can change the position of the tongue and surrounding tissues and potentially increase the space available for airflow.
Researchers have therefore investigated whether jaw-muscle activity and forward mandibular movements may occur around episodes of sleep-disordered breathing and sleep arousal.
This is one possible explanation for the association between sleep bruxism and breathing disturbances during sleep.
So if your child is grinding their teeth every night, especially if they also snore or mouth breathe, it is reasonable to investigate their sleep and airway.
What About Screen Time and Teeth Grinding?
This is another question parents ask: Could too much screen time be causing my child’s teeth grinding? It is an interesting possibility because many parents notice that their child’s sleep changes when screen time increase.
For example: bedtime becomes later. They spend long hours gaming. Or have a habit of watching YouTube or TikTok before bed. All these causes the child to become more alert instead of winding down.
There is research investigating the relationship between screen time, sleep quality and sleep bruxism in children, and some studies have found an association between higher screen exposure and more frequent sleep bruxism.
But this does not mean: Screen time = teeth grinding.
Excessive screen time may affect bedtime routines, sleep duration, sleep quality and arousal levels, which could potentially influence sleep-related behaviours.
So reducing screen time before bed is certainly a sensible step. But if your child is also snoring, mouth breathing or sleeping restlessly, I would not blame everything on the tablet.
What Do Tonsils, Adenoids and Jaw Development Have to Do With It?
When I assess a child from an airway perspective, I don’t look at the teeth alone. I want to understand the bigger picture.
For example: Are the tonsils enlarged? Are the adenoids affecting nasal breathing? Is the child breathing through their mouth? Is the upper jaw narrow? How is the tongue resting? How is the child’s jaw developing? Does the child snore? How restless is their sleep?
These factors can interact with one another. For example, a child with enlarged tonsils and adenoids may have difficulty breathing comfortably through the nose. They may begin mouth breathing. Over time, chronic mouth breathing may be associated with changes in oral posture and facial growth patterns.
And if the child also has sleep-disordered breathing, their sleep quality may be affected. This is why airway dentistry is not simply about straightening teeth. It is about understanding the relationship between breathing, sleep, tongue posture, oral function, jaw development and dental development.
For parents searching for an airway dentist in Subang Jaya, this whole-child approach is an important part of understanding why airway-focused dental assessment can be different from a routine dental check-up.
When Should Parents Be Concerned About Night-Time Teeth Grinding?
If your child occasionally grinds their teeth, there may not be a reason to panic. But I would pay closer attention if children grinding their teeth at night is happening together with other symptoms.
For example:
- Child snoring regularly
- Sleeping with the mouth open
- Restless or fragmented sleep
- Frequent tossing and turning
- Gasping or choking during sleep
- Pauses in breathing
- Heavy sweating during sleep
- Waking with a dry mouth
- Chronic nasal congestion
- Dark circles under the eyes
- Daytime tiredness
- Difficulty concentrating
- Behavioural changes
- Crowded teeth
- Narrow upper jaw
- Difficulty chewing
These signs do not automatically mean your child has pediatric sleep apnea. But when several of these symptoms appear together, it is worth taking a closer look.
So, How Do You Stop a Child From Grinding Their Teeth?
This is where I would change the question slightly. Instead of only asking: How do I stop my child’s teeth grinding? Remember to ask:
Why is my child grinding their teeth in the first place?
If the main contributing factor is stress, addressing stress and emotional wellbeing may help.
If poor sleep habits are contributing, improving sleep hygiene and screen time may help.
If there are signs of sleep-disordered breathing, the child may need an appropriate airway and sleep assessment.
If there are enlarged tonsils or adenoids, an ENT assessment may be appropriate.
If there are concerns about jaw development, mouth breathing or oral function, an airway-focused dental assessment may also be useful.
For parents in Subang Jaya and surrounding areas, the right place to start depends on the symptoms your child is showing.
The correct approach depends on what is actually happening with that particular child.
Don’t Just Listen to the Grinding. Listen to the Sleep.
One of the biggest mistakes we can make as parents is focusing only on the symptom we can hear.
We hear: GRIND. GRIND. GRIND. So naturally, we focus on the teeth. But your child’s sleep is much bigger than their teeth.
Watch how they breathe. Listen for snoring. Look at whether their mouth stays open.
Notice whether they are constantly moving. Pay attention to how they behave during the day.
Sometimes, night-time teeth grinding is simply sleep bruxism.
But sometimes, it can occur alongside other signs of sleep-disordered breathing in children.
And that is why I don’t want parents to automatically dismiss it as: Just stress. Just a bad habit. Just too much screen time. And definitely don’t panic. Instead, become curious. Try to ask:
What is happening to my child’s breathing while they sleep?
Because sometimes, the teeth are not the whole story. Sometimes, they are simply the loudest clue.
When to Seek an Assessment
If your child has persistent sleep bruxism, particularly when it occurs alongside snoring, mouth breathing, restless sleep or suspected breathing difficulties, speak with your child’s healthcare professional.
Depending on the symptoms, assessment may involve a paediatrician, ENT specialist, sleep physician, dentist or airway-focused dentist.
If you’re based in Subang Jaya, USJ, SS15, Bandar Sunway, Puchong or nearby areas, you can start by discussing your child’s symptoms with an appropriate healthcare professional and asking whether a further sleep, airway or dental assessment would be suitable.
The goal is not simply to make the grinding sound disappear.
The goal is to understand the underlying factors affecting your child’s sleep, breathing and oral function.
Because when we understand the reason behind the symptom, we can make a much more informed decision about what to do next.
Your child’s teeth may be telling you something.
The question is: Are we listening?
Frequently Asked Questions
Why does my child grind their teeth at night?
Children may grind their teeth during sleep for several reasons. Sleep bruxism in children is multifactorial and may be associated with sleep quality, stress, neurological factors, oral habits and sleep-disordered breathing.
Can sleep apnea cause teeth grinding in children?
Sleep apnea and sleep bruxism can be associated, but teeth grinding does not prove that a child has sleep apnea. If your child also snores, mouth breathes, gasps or has restless sleep, an assessment may be appropriate.
Can mouth breathing cause teeth grinding?
Mouth breathing and sleep bruxism have been associated in children, particularly when mouth breathing occurs alongside other signs of sleep-disordered breathing. However, mouth breathing should not automatically be considered the sole cause of bruxism.
Does screen time cause teeth grinding?
Research has found associations between screen exposure, sleep and sleep bruxism, but screen time has not been established as the sole cause of teeth grinding. Excessive evening screen use may affect sleep quality and bedtime routines.
Is teeth grinding a sign of stress in children?
Stress can be associated with sleep bruxism, but it is not the only possible factor. Persistent night-time grinding should be considered alongside the child’s sleep, breathing and overall health.
Should I worry if my child grinds their teeth every night?
Persistent sleep bruxism, especially when accompanied by child snoring, mouth breathing, restless sleep or breathing pauses, is worth discussing with an appropriate healthcare professional.
Can an airway dentist help with children’s teeth grinding?
An airway-focused dentist in Subang Jaya can assess dental development, oral function, tongue posture, jaw development and signs that may be associated with airway or breathing problems. If sleep-disordered breathing is suspected, referral to a paediatrician, ENT or sleep specialist may also be appropriate.
Ready to clear your child’s airway and stop the night grinding for good? Book an Airway & Dental Assessment at our Subang Jaya clinic today. Call or WhatsApp us now to get in touch!