Why Do Children Grind Their Teeth at Night?
Posted on 4/5/2026 by SRD Russellville |
 If you’ve walked past your child’s bedroom in Russellville and heard the unmistakable sound of grinding teeth at night, you’re not alone, and the situation is rarely as alarming as it sounds. Nighttime tooth grinding, known clinically as bruxism, is one of the most common behaviors parents ask our team about. Research suggests that somewhere between 15% and 30% of children grind their teeth during sleep at some point, and the majority outgrow it without any treatment at all.
This post walks through why kids grind their teeth, what signs deserve a closer look, and when it’s worth scheduling a teeth grinding evaluation with our Russellville team. The goal is to give you a calm, clear picture of what’s going on so you can decide whether it’s something to monitor or something to address.
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What Bruxism Is in Children
Bruxism is the clinical term for clenching or grinding the teeth, and it can happen during the day (awake bruxism) or during sleep. Most pediatric grinding falls into the sleep category, which is why parents usually discover it accidentally by hearing the sound from another room. Children often have no memory of it the next morning.
The behavior tends to show up most often between ages 3 and 6, and again as the permanent teeth come in. As baby teeth come and go and the jaw adjusts to new tooth positions, the muscles of the bite can react in unpredictable ways during sleep. For many kids, this is a passing phase that resolves on its own. Our dentistry for children team sees this pattern often: a worried parent describes nightly grinding that quietly disappears within a year or two as the bite settles.
That said, bruxism in children is not always benign. Some cases are tied to underlying factors worth identifying, which is why it’s worth a conversation rather than just an assumption.
Why Children Grind at Night
 Childhood grinding usually has more than one contributing factor, and identifying the most likely cause helps guide what to do next. The most common reasons we see in younger patients include a developing bite where the upper and lower teeth meet unevenly during the transition between baby and permanent teeth, normal stress or excitement from a busy day at school or new social situations, and ear infections or teething discomfort in very young children, who may grind as a way of self-soothing.
Allergies and sinus pressure deserve special mention because they’re commonly missed. A child with congested airways at night often shifts the jaw forward or side to side to breathe more easily, and that movement can read as grinding to a parent listening in the next room. Sleep-disordered breathing falls into the same category. Even mild airway issues can prompt the jaw to compensate during sleep, which is why we sometimes recommend evaluating for sleep apnea in children when grinding persists alongside snoring or restless sleep.
A small number of cases are linked to certain medications, particularly some used for attention or behavioral conditions. If your child started grinding shortly after beginning a new prescription, that’s worth mentioning at the next pediatric appointment so the physician can weigh in.
Signs Worth Watching For
The honest truth is that the sound of grinding by itself doesn’t tell you much. What matters more is whether the grinding is causing physical signs or affecting your child’s rest. Pay attention if you notice visible wear on the baby teeth, where the chewing surfaces look flattened or shiny compared to the rest of the tooth. Chipped baby teeth, complaints of jaw soreness or morning headaches, sensitivity to cold drinks, and grinding loud enough to be heard from a closed bedroom are all signals that the grinding has moved past background noise.
Restless sleep, frequent waking, mouth breathing, or snoring alongside the grinding deserve a closer look. These can be signs that the airway is involved, which changes the conversation from “wait and watch” to “let’s evaluate.” Daytime symptoms like fatigue, trouble focusing at school, or unusual irritability can also point to disrupted sleep quality, even if your child appears to sleep through the night.
What you generally don’t need to worry about: occasional grinding heard a few times that doesn’t produce any visible damage, complaints, or sleep disruption. That’s the version of bruxism that tends to fade on its own.
When to Schedule a Visit
 Some grinding can wait for your child’s next routine dental exam to be discussed. Other situations warrant scheduling sooner. Here is how our team generally thinks about it.
Schedule a sooner-than-routine visit if your child is past age six and the grinding has continued with visible tooth wear or chipping, if your child is complaining of jaw discomfort or morning headaches, if you’re seeing snoring, mouth breathing, or restless sleep alongside the grinding, or if you’ve noticed sensitivity that wasn’t there before. These are situations where letting things go untreated can mean further wear on developing teeth, or missing an underlying airway issue.
For everything else, a check-in at the next regular cleaning and exam is usually the right pace. At that visit, we’ll examine the baby and permanent teeth for wear patterns, evaluate how the upper and lower teeth meet when biting, look at the airway and tongue, and ask questions about sleep quality at home. That comprehensive look helps clarify whether the grinding is part of normal development or part of something that benefits from intervention.
What Care Looks Like
A point that often surprises parents: custom night guards are uncommon for younger children. Their teeth and jaws are still changing rapidly, which means a guard fitted today may not fit a few months from now. For children with significant grinding damage and a more stable bite, our team will discuss whether a guard makes sense at that particular stage. For most kids, the focus is elsewhere.
Addressing contributing factors usually does more good than any appliance. That can mean working with your pediatrician on allergy management if congestion is part of the picture, treating ear infections promptly when they recur, and identifying whether sleep-disordered breathing is involved. Bedtime routines that lower stress also help: predictable wind-down time, limited screens close to bedtime, and a calm sleep environment.
For older children where the permanent teeth have come in and grinding is producing visible wear, a custom appliance may become appropriate. We’ll discuss this on a case-by-case basis after a full evaluation. The point is that grinding in kids rarely calls for the same approach as grinding in adults, and the right answer depends on your child’s age, stage of dental development, and the underlying cause.
Talking With Our Russellville Team About Your Child
If something you’ve read here describes what’s happening at home, we’d be glad to take a closer look. Call Singing River Dentistry at 256-332-6888 or schedule a visit at our Russellville office to talk through what you’ve noticed. A focused evaluation is often enough to put a parent’s mind at ease, and when something does need attention, catching it early gives your child the best outcome.
Frequently Asked Questions
Will my child outgrow grinding their teeth?
In most cases, yes. Many children grind their teeth at some point during early childhood and stop on their own as their permanent teeth come in and the bite settles. The grinding that persists into the school years or causes visible damage is the version worth evaluating with our team.
Can grinding damage baby teeth permanently?
It can. Heavy or prolonged grinding can flatten the chewing surfaces of baby teeth and occasionally chip them. Since baby teeth eventually fall out, the longer-term concern is usually whether the grinding continues into the permanent teeth or whether it’s a sign of something we should address now, such as airway issues.
Does my child need a night guard?
Probably not, at least not right away. Night guards are uncommon for younger children because their teeth and jaws are still changing. A custom night mouth guard may be appropriate later if grinding continues after the permanent teeth have come in and is causing visible wear, but the first step is always a comprehensive evaluation.
Is grinding linked to ADHD or anxiety?
Stress and anxiety can contribute to grinding in some children, and certain medications used for behavioral or attention conditions have been associated with bruxism. If your child started grinding shortly after starting a new medication, share that with both their pediatrician and our dental team so we can factor it into the evaluation.
Should I wake my child when I hear grinding?
No. Interrupting your child’s sleep often does more harm than good. Sleep grinding usually happens during transitions between sleep stages, and waking your child won’t stop it from happening another night. Track the frequency, note any related signs like snoring or morning complaints, and bring that information to your child’s next dental visit.
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