IT EN ES

Development · FAQ

Teeth Grinding in Kids: Causes and What to Do

Reviewed against general pediatric guidance 5 min read

Hearing the sound of teeth grinding together at night, coming from a sleeping child's room, startles many parents the first time. Nighttime bruxism — grinding or clenching teeth during sleep — is actually one of the most common behaviors in childhood, and in most cases doesn't require any intervention.

What childhood bruxism is

Bruxism is the involuntary grinding or clenching motion of the teeth, which in children almost always happens during sleep, in the transitions between sleep cycles. The sound can be surprisingly loud, but that doesn't automatically mean damage is occurring. Many parents first notice it purely by ear, from another room, well before ever seeing it happen.

Why it happens

The exact causes aren't always clear, but among the most commonly associated factors are: tooth growth and alignment (especially during the eruption of baby or permanent teeth), tension or stress built up during the day, and in some cases a relationship with breathing during sleep.

In most children, nighttime bruxism is a phase that resolves on its own with growth, not a warning sign.

How common it is, and how long it lasts

Bruxism affects a significant share of preschool and school-age children, often peaking around periods of tooth transition. In most cases it tends to fade on its own with age, as the dental arch stabilizes.

A note on methodology: this guide summarizes widely shared general pediatric and dental guidance on childhood bruxism.

How to protect the teeth in the meantime

In most cases no device is needed, but if the dentist detects significant enamel wear, they may suggest a soft custom night guard designed specifically for the child's age. Keeping a good evening oral hygiene routine remains the most important foundation regardless of bruxism.

When to talk to the pediatric dentist

A routine dental checkup is still the simplest way to monitor the situation over time, even without concerning signs.

The bottom line

Nighttime bruxism is common in childhood and in most cases resolves on its own with growth. Monitoring tooth wear with regular dental checkups, without panicking at the first nighttime sound, is the most balanced approach.

This article is for informational purposes only and is not medical or dental advice. For any concerns, consult your pediatric dentist or pediatrician.