If you’ve heard your child grinding their teeth at night, it can sound awful. Most parents assume it means something is wrong. In reality, teeth grinding (bruxism) is very common in children, and in many cases it’s temporary and not harmful.

The key is knowing when it’s likely to be a normal phase, and when it’s a sign that your child needs a proper dental assessment.

Key takeaways

• Teeth grinding is common in kids and often settles with
• Most cases don’t need treatment, but they do benefit from
• Red flags include pain, broken teeth, significant wear, headaches, or sleep breathing
• A dental check-up helps confirm whether grinding is damaging teeth or linked to other factors.

Why do kids grind their teeth?

There isn’t one single reason. In children, grinding can be linked to:

• normal development and changing bite as teeth erupt
• periods of lighter sleep or restless sleep
• stress or big changes (sometimes, but not always)
• nasal congestion, mouth breathing, or airway factors
• some medical conditions or medications (less common)

It’s important not to blame your child or assume it’s “just anxiety.” Many kids grind even when they’re happy and relaxed.

When teeth grinding is usually “normal”

In many children, grinding:

• happens during sleep
• comes and goes
• doesn’t cause pain
• doesn’t lead to visible tooth damage
• resolves as they grow and their bite changes

If your child is grinding but sleeping well, eating normally, and isn’t complaining of sore teeth or jaw pain, it’s often something we monitor rather than treat aggressively.

When you should book a dental assessment

Grinding becomes more important when it’s causing symptoms or damage. Book in if you notice any of these:

• Your child complains of sore teeth, jaw pain, or headaches (especially in the morning)
• Teeth look noticeably worn down or flattened
• You see chips, cracks, or broken fillings
• Your child has trouble opening wide or chewing
• The grinding is very loud and constant, and sleep seems disrupted
• Your child snores heavily, mouth breathes most nights, or seems unusually tired during the day
• There are signs of sensitivity, like avoiding cold foods or brushing discomfort

These don’t automatically mean something serious is happening, but they do justify a closer look.

What we look for at the appointment

A kids grinding assessment usually includes:

• checking tooth wear patterns and enamel thickness
• checking if baby teeth are wearing in a normal way or excessively
• looking for cracks, chips, or weak spots
• checking the bite and jaw function
• asking about sleep quality, snoring, congestion, and mouth breathing
• discussing habits and any recent changes at home or school

Sometimes, what looks like “grinding damage” is actually normal wear on baby teeth. Other times, we spot early issues that are easier to manage now than later.

What can help at home

Most of the time, the best approach is supportive rather than intensive. Practical steps:

• Keep a consistent bedtime routine and prioritise quality
• If your child is congested or mouth breathing, consider discussing it with your
• Avoid chewing gum or constant chewy snacks that overload jaw
• If stress is a factor, gentle wind-down routines (reading, calm music) can help without turning it into a big issue.

If your child grinds during the day, it’s worth noticing when it happens and what triggers it, but avoid making them feel “in trouble” for it.

Do kids need night guards?

Sometimes, but not often, and not as a first step.

In many children, guards aren’t necessary because:

• grinding is temporary
• the bite is changing with growth
• compliance is difficult
• and we prefer conservative monitoring unless there’s clear damage

If a guard is considered, it should be for a specific reason and tailored to the child’s growth stage and risk profile.