Published: June 1, 2026, Last Updated: June 1, 2026
Author: Adel Galal — Founder, ParntHub.com
A toddler grinding teeth at night is one of those sounds that stops you in your tracks.
You walk past the bedroom. You hear a loud, grating
noise. Your stomach drops. You push the door open. Your toddler is fast asleep.
Grinding their teeth loudly enough to be heard across the hall.
Is something wrong? Is this hurting them? Should you be
worried?
For most toddlers, the answer is no. Toddler teeth
grinding is extremely common. It usually resolves on its own. But there are
situations worth watching for.
I am not a doctor or dentist. What I share comes from
real-life experience, research, and consultation with healthcare providers. This
information is not a substitute for professional medical guidance.. Always
consult a qualified medical professional.
Visit our complete
toddler guide for more on toddler health and dental care.
What Is Toddler Teeth Grinding?
Toddler teeth grinding is called bruxism. It is
the grinding, gnashing, or clenching of teeth. It usually happens during sleep.
Bruxism occurs when someone unconsciously grinds, clenches, or
gnashes their teeth. In children, it often happens at night when they are
in a deep stage of sleep. This makes it especially difficult for them to recognize
the habit on their own. Sometimes, parents or siblings are the first to notice
the telltale noise.
There are two types of bruxism. Sleep bruxism
happens during sleep. Awake bruxism happens during the day, often when
concentrating or stressed. In toddlers, sleep bruxism is far more common.
How Common Is Toddler Teeth Grinding?
Very common. The numbers are reassuring.
Roughly 20–30% of children grind their teeth, most often during
sleep.
The American Academy of Pediatric Dentistry puts the
figure even higher. Around 38% of kids experience teeth grinding at some stage.
An estimated 3 out of 10 kids grind their teeth before
reaching age 5.
So if your toddler is grinding their teeth at night,
they are in very good company. This is not unusual behaviour. It is one of the
most common childhood sleep behaviours there is.
Key
fact from CHOP - Teeth grinding is more common in children than most parents
think. Most cases begin around age 3 to 4 and naturally resolve by the time
permanent teeth emerge and the jaw develops. Most children outgrow it without
any treatment needed.
What Causes Toddler Grinding Teeth at Night?
Several different causes can drive toddler bruxism. No
single cause has been confirmed as universal.
Research has not pinned down the exact cause of bruxism
in kids. But these are the most identified contributing factors.
Is It Teething?
Yes, this ranks among the most frequent causes in toddlers
Most of the time, teeth grinding occurs because of
teething or improper tooth alignment. When new teeth are coming through, the
toddler's bite feels different. Grinding can be a response to the unfamiliar
sensation in the mouth.
As teeth emerge and the bite stabilizes, this type of
grinding almost always stops on its own.
Is it a misaligned tooth?
Yes. When teeth do not fit together properly, grinding
can occur.
The child's jaw moves to find a comfortable position.
This produces a grinding action during sleep. As the jaw and teeth develop, the
alignment often improves, and the grinding reduces.
Is It Stress or Anxiety?
Yes. Many pediatricians and dentists see stress as a
contributing factor.
Kids who worry about changes, family situations, or new
experiences often grind or clench their teeth. Stress makes kids grind their
teeth at night, whether it is thinking about an upcoming event or feeling
unsettled by a life change.
In toddlers, emotional stress from changes like a new
sibling, starting nursery, or moving house can trigger or worsen teeth
grinding.
Excess energy or overstimulation before bedtime can lead to
episodes of teeth grinding.
Is it a sleep disorder?
Sometimes yes. Low‑quality sleep may play a role in
causing bruxism
Sleep disorders like sleep apnoea or snoring can
contribute to grinding. Grinding often occurs during lighter sleep phases when
the brain is transitioning between sleep stages. A toddler with disrupted sleep
architecture may grind more as a result.
If grinding comes with loud snoring, mouth breathing,
or daytime sleepiness, speak to your pediatrician about ruling out sleep
apnoea.
Is It Second-Hand Smoke?
Yes. Research has identified this as a risk factor.
Research shows that secondhand smoke can trigger
bruxism. This is an important factor for families where smoking occurs in the
home.
Is It Allergies or Congestion?
Sometimes yes. Nasal congestion or sinus pressure can
lead to mouth breathing during sleep. Mouth breathing during sleep is
associated with increased bruxism.
If your toddler has frequent nasal congestion alongside
teeth grinding, an allergy assessment may be worthwhile.
Is it medications?
Sometimes yes. Certain medicines can also cause
bruxism. Some stimulants used to treat ADHD can worsen bruxism as a side
effect. If your toddler is on any medication and grinding begins, speak to your
prescribing doctor.
What Are the Signs of Toddler Teeth Grinding at Night?
You may hear it before you see any symptoms. But
these signs confirm it is happening.
A grinding or grating sound during sleep. This is the
most common way parents discover the grinding.
Morning complaints of jaw soreness or a sore mouth. A
toddler who consistently says their mouth hurts in the morning may be grinding
overnight.
Headaches on waking. Morning headaches, especially
around the temples, can be caused by the muscular effort of overnight grinding.
Teeth that look worn down or chipped. A dentist will
often identify this before a parent does. Baby tooth enamel is thin. Heavy
grinding wears it down faster than in adults.
Sensitivity to hot and cold foods. This can develop
when enamel is worn by grinding, exposing the underlying dentine.
Does Toddler Teeth Grinding Cause Damage?
In most cases, no. But
heavy or persistent grinding can cause issues.
Most cases of teeth grinding in toddlers do not cause
lasting damage. Baby teeth are temporary. Even if they show some wear, they
will be replaced by permanent teeth. In this context, a watchful approach is
almost always appropriate for toddlers under age 6.
However, frequent or intense bruxism can lead to worn tooth
enamel, sensitivity to hot and cold, jaw soreness, headaches, and disrupted
sleep quality.
The key is monitoring. Light or occasional grinding is
rarely a concern. Heavy, nightly grinding with physical symptoms needs a
dental assessment.
Does Toddler Grinding Teeth at Night Go Away on Its Own?
Yes. In most cases, it does. The
timeline is reassuring.
In most instances, bruxism resolves naturally by the age of six. Most cases begin around age 3 to 4 and
naturally resolve by adolescence as permanent teeth emerge and the jaw
develops.
The grinding typically reduces or stops when -
Teething completes, and the bite settles. The toddler's
jaw and teeth grow into better alignment. The stressor or change that triggered
it passes. The child develops other ways to manage emotional regulation.
Most children outgrow bruxism without any treatment.
For young children where no symptoms are present, a watchful waiting approach
is typically appropriate.
What Should You Do About Toddler Grinding Teeth at Night?
For most toddlers, active treatment is not needed. Still,
there are practical measures worth pursuing.
Mention It at the Next Dental Visit
Even if the grinding seems mild, mention it at your
toddler's next dental appointment. The dentist can check for wear, assess tooth
alignment, and confirm whether any monitoring is needed.
Your child's dentist and doctor can discuss whether to
monitor for now or act.
Reduce Stress and Stimulation Before Bed
If stress is a contributing factor, build a calming
bedtime routine. Avoid stimulating activities for 30 to 60 minutes before bed.
No loud games. No screens. No rough play.
A calm, predictable wind-down reduces the arousal
level that can trigger grinding.
Look for Sources of Stress
Talk to your toddler during calm daytime moments. Check
whether anything is worrying them. A new nursery, a new sibling, a frightening
experience. Address the source where you can.
CHOP advises talking to your child to find out what is
bothering them. Then help them find a solution. Rely on relaxation techniques.
Ensure Good Hydration
Insufficient hydration may be linked to a higher frequency of teeth‑grinding
episodes. Ensure your toddler drinks adequately throughout the
day, especially in the summer months.
Check for Nasal Congestion
If your toddler regularly breathes through their mouth
at night, speak to your pediatrician about checking for allergies or adenoid
enlargement. Addressing mouth breathing often reduces grinding.
Do Not Use a Night Guard for Toddlers
Night guards are used for older children and adults
with significant tooth damage. They are not appropriate for toddlers. A dentist
will advise on night guards for older children only when there is clear
evidence of tooth damage from grinding.
When Should You See a Dentist or Doctor About Grinding?
Most toddler grinding requires only monitoring. These
signs warrant a prompt appointment.
Talk to your pediatrician and dentist if:
Your toddler grinds loudly while asleep and has
consistent face, ear, or jaw pain.
Your toddler grinds loudly and does not seem to get
enough rest at night. A sleep study may be the next step to rule out sleep
apnoea.
Teeth look worn down, chipped, or show significant
enamel loss.
The grinding persists for more than six months without
improvement.
Your toddler has morning headaches consistently
alongside the grinding.
The grinding is accompanied by loud snoring or mouth
breathing during sleep.
A Note from Adel
Two of my four children ground their teeth as toddlers.
With my eldest, I heard it for the first time when she was about 2 and a half.
I was genuinely alarmed by the sound.
The pediatrician was completely calm. He said it was
one of the most common things parents call about. He told me to mention it at
her next dental visit and to watch for any jaw pain in the mornings.
She had no jaw pain. No chipped teeth. No worn enamel.
She stopped grinding entirely by age 5 without any treatment.
My second child ground his teeth from about age 3. He
was going through a period of significant change. A new baby sibling had
arrived. The grinding was clearly stress-related.
We built a calmer bedtime routine. We spent time with
him. The grinding was reduced within a few weeks and was gone by age 4.
In both cases, the solution was simple. Watch it.
Mention it to the dentist. Address any stress. Wait.
Keep
Reading → Complete Toddler Guide → Toddler Dental Health → Toddler Teething → Toddler Sleep Routine → Toddler Anxiety → Toddler Not Sleeping Through the Night
FAQs about Toddler Grinding Teeth at Night
Is it normal for toddlers to grind their teeth at
night?
Yes. About 20% to 38% of children grind their teeth at
some point. It is one of the most common childhood sleep behaviours. Most cases
begin around age 3 to 4 and resolve naturally by age 6 without any treatment
needed.
What causes toddlers to grind their teeth?
Common causes include teething, tooth misalignment,
stress or emotional change, poor sleep quality, second-hand smoke exposure,
nasal congestion, and, rarely, certain medications. No single cause has been
confirmed in all cases.
Does toddler teeth grinding cause damage?
In most cases, no. Baby teeth are temporary. Light
grinding in a toddler with no symptoms is almost always a watchful waiting
situation. Heavy grinding with jaw pain, headaches, or visible tooth wear needs
a dentist's assessment.
When does toddler teeth grinding stop?
Most cases
resolve naturally by age 6 as teeth fully emerge and the jaw develops. The
American Academy of Pediatric Dentistry confirms most children outgrow bruxism
without treatment.
When should I take my toddler to the dentist for
grinding?
See a dentist if
grinding is loud and causes consistent jaw pain or headaches, teeth show wear
or chipping, grinding persists for more than six months, or if grinding is
accompanied by loud snoring or mouth breathing during sleep.
References and Sources
1.
AAP HealthyChildren.org
“Teeth Grinding in Children: What to Know About Bruxism" Stress
as a contributing factor, secondhand smoke, resolves by age 6 healthychildren.org
2.
CHOP “Teeth
Grinding in Children" 3 in 10 kids under age 5, teething
and tooth misalignment as primary causes chop.edu
3.
Sleep Foundation
“Why Do Kids Grind Their Teeth at Night?" Bruxism
diagnosis criteria, sleep apnoea link, medication side effects sleepfoundation.org
4.
Petite
Smiles Pediatric Dentistry “Tooth Grinding in Children: When to Worry, When to
Wait" AAPD guidance, watchful waiting approach, 15 to 33%
prevalence, peaks at ages 5 to 7 petitesmilesdentistry.com
5.
Lovebee
Pediatric Dentistry “Child Grinding Teeth at Night: Causes and When to
Worry" Sleep disorder connection, overstimulation trigger,
38% AAPD statistic lovebeedentistry.com
About the Author
Adel Galal Founder, ParntHub.com | Father of
Four | Grandfather of Four | 33 Years of Parenting Experience
Adel Galal created ParntHub.com to give parents honest,
research-backed guidance in plain language. As a father of four and grandfather
of four, Adel has lived through every stage of early childhood. He combines
personal experience with content reviewed by pediatric and dental specialists.
