Teeth grinding, also known as bruxism, is common in children, especially during sleep. Many parents are surprised to learn their kid is grinding their teeth until they hear it at night or notice changes in their child’s teeth or behavior. While bruxism is often temporary, it is important to understand the signs and when to take them to see a professional.
Signs & Symptoms
Children may not always be aware they are grinding their teeth, so parents often notice the signs first. Common symptoms of bruxism include:
- Grinding or clenching sounds at night: This can sound like clicking, crunching, or scraping noises.
- Worn or damaged teeth: Teeth may appear flattened, chipped, or shorter than before. The edges of the teeth may look rough or uneven.
- Jaw or facial soreness: Kids may complain of a sore jaw, tight facial muscles, or pain near the ears (especially in the morning).
- Tooth sensitivity: Grinding can wear down enamel, making teeth more sensitive to cold drinks, hot foods, sweets, or cold weather.
- Cheek or tongue marks: You may notice bite marks inside the cheeks or scalloped edges along the tongue from repeated clenching.
- Sleep issues: Bruxism may be associated with restless sleep, frequent waking, or difficulty staying asleep.
Why is my kid grinding their teeth at night?
There is no single cause for bruxism in kids; often several factors contribute. Stress, growing smiles, bite/alignment changes, or sleep-related issues can all play a role.
Should I be concerned?
In many cases, teeth grinding is temporary. However, persistent grinding can lead to enamel wear, tooth damage, and jaw discomfort. Monitoring symptoms and regular dental visits can help ensure it doesn’t cause long-term issues.
If you’re concerned or just want to check in with a professional, you can always book a quick check-up at any Kids Care Dental & Orthodontics office. Book online in just a few clicks using the link below.

This article has been reviewed for medical accuracy by Dr. David Trent, Chief Medical Officer and Oral Surgeon at Kids Care Dental & Orthodontics.