Teeth grinding in children, called bruxism, is common and often happens during sleep. Many kids outgrow it, but frequent or forceful grinding can wear down enamel, cause jaw soreness or headaches, and point to a bite or habit worth checking. A dental exam tells you whether it needs treatment.
Many parents first notice grinding as a scraping or clicking sound from a child’s room at night. It can be unsettling to hear, and it is natural to wonder whether it is damaging your child’s teeth. Below we explain why children grind, the signs to watch for, when it is harmless and when it deserves attention, and how a pediatric dentist and an orthodontist can each help.
Why Do Children Grind Their Teeth?
There is rarely a single cause. In young children, grinding often shows up while teeth are coming in and the bite is changing, as the jaw seems to search for a comfortable resting position. Baby teeth and newly erupted permanent teeth do not always meet evenly, and some children grind against those uneven spots.
Stress and changes in routine can play a role, just as they do for adults. A new school, a move or a busy season can show up as nighttime clenching. Grinding is also associated with sleep and breathing patterns in some children, which is one reason to mention snoring or mouth breathing to your child’s dentist if you notice them.
Bite and alignment matter too. A misaligned bite can lead teeth to rub in ways they should not. Our post on how to tell if your bite is misaligned lists common signs. Other childhood habits, like thumb sucking, tongue thrusting and nail-biting, can also affect how the teeth and jaws develop.
What Are the Signs of Teeth Grinding in Kids?
Grinding happens mostly during sleep, so children usually do not know they do it, and they may not connect morning discomfort with something that happened overnight. Parents tend to notice the sound first. Other clues include teeth that look flat, chipped or shorter than they should, especially the canines and molars, along with complaints of a sore jaw, tired face muscles or headaches in the morning.
Some children mention that their teeth feel sensitive to cold, which can happen when grinding wears away enamel. Others have trouble opening wide or notice clicking in the jaw. These symptoms overlap with temporomandibular disorder, or TMD. Our TMJ and TMD page lists the full set of symptoms, from jaw pain to ear stuffiness and a change in how the top and bottom teeth meet.
| What you notice | Often less concerning | Worth a dental visit |
|---|---|---|
| How often | Occasional sounds that come and go | Grinding most nights for weeks |
| Teeth | No visible wear | Flattened, chipped or sensitive teeth |
| Comfort | No complaints | Jaw pain, morning headaches or trouble opening |
| Age and timing | During periods when teeth are erupting | Continues as permanent teeth come in |
Is Teeth Grinding Harmful for Children?
Often it is not. Many children grind for a period and then stop on their own, especially once their permanent teeth settle in. Mild grinding on baby teeth that will eventually fall out may only need monitoring at regular checkups.
Grinding becomes a concern when it is frequent or forceful enough to cause damage or pain. Worn enamel does not grow back, so steady grinding on permanent teeth can lead to sensitivity, chips and long-term wear. Jaw muscle soreness and headaches can affect sleep and daily comfort. Our post on whether orthodontic treatment can help with jaw pain or TMJ explores the bite side of that question.
Should I Wake My Child When They Grind?
There is usually no need. Note how often it happens and whether your child mentions pain, and share those details at the next dental visit so the team can compare with what they see on the teeth.
How Is Teeth Grinding Treated in Kids?
The first step is an exam. At regular checkups, our pediatric team looks for wear on the teeth and asks about symptoms, which helps track whether grinding is getting better or worse. Our post on what happens during a pediatric dental exam walks through those visits.
When grinding is causing damage or pain, a night guard can help. NC Tooth Docs makes custom-fit mouthguards, including night guards worn while sleeping to prevent damage caused by teeth grinding and clenching, and TMJ guards designed to relieve tension and reduce jaw strain. Our mouthguards in Huntersville page describes each type. Whether a guard makes sense for a child depends on age and how the teeth and jaws are still developing, so your dentist will guide that decision.
If an uneven bite seems to be driving the grinding, an orthodontic evaluation can help. Orthodontics can fix an incorrect bite and improve jaw misalignment, and because NC Tooth Docs has both a pediatric dentist and an orthodontist in one practice, the two can look at the same child’s teeth from both angles.
How Is Grinding Different From Clenching?
Grinding means the teeth slide against each other, which is what produces the sound parents hear at night. Clenching means the teeth are pressed together hard without much movement. Clenching is silent, so it is easy to miss, but it can strain the jaw muscles and joints just as much. Some children do both, and some clench during the day while concentrating on homework, screens or sports. Because daytime clenching happens while a child is awake, it is often easier to change once they know to watch for it.
The difference matters because the clues are different. Grinding tends to show up as visible wear on the biting edges of teeth. Clenching more often shows up as tired jaw muscles, headaches or soreness when chewing. Mentioning both possibilities at a checkup, even if you have only heard grinding, helps the dentist look for the right signs.
What Can Parents Do at Home?
Start by paying attention. Keep a simple note of how often you hear grinding, whether your child mentions jaw pain or headaches, and whether anything seems to make it worse, such as a stressful week or a late bedtime. That record is far more useful at an appointment than a general impression, and it shows whether things are improving over time.
A calm, predictable bedtime routine can help, including winding down without screens before sleep. For older children who clench during the day, a gentle reminder to keep their lips together and teeth apart can build awareness. Chewing evenly on both sides of the mouth and avoiding constant gum chewing are simple habits our TMD guidance recommends for jaw comfort. If your child snores, breathes through the mouth at night or seems tired despite a full night’s sleep, mention it, since sleep and breathing can be part of the picture.
Frequently Asked Questions
At what age do kids grind their teeth?
Grinding is common in young children, often while teeth are erupting, and many children outgrow it. If it continues as permanent teeth erupt, mention it at your child’s next checkup.
Can grinding damage baby teeth?
It can wear baby teeth down. Because baby teeth eventually fall out, mild wear is often monitored. Heavy wear or pain should be checked.
Do kids need a night guard for grinding?
Not always. A guard is considered when grinding causes damage or discomfort, and the timing depends on how your child’s teeth and jaws are developing.
Can braces stop teeth grinding?
Braces correct how the teeth meet. When a misaligned bite contributes to grinding, improving the bite may help, and the orthodontist will explain what to expect.
Have Your Child’s Teeth Checked
Dr. Amanda is a board-certified pediatric dentist who understands that every child has different needs. If you hear grinding at night or your child mentions jaw pain, request a kids dentistry appointment or call 704.456.9166.