That grating sound from the next room can worry any parent. Teeth grinding, called bruxism, is common in young children, and it tends to fade without any treatment.
Why It Happens
HealthyChildren.org, the AAP’s parent site, says research has not pinned down the exact cause of bruxism in children, though many dentists and pediatricians see stress as a contributing factor. An earache, teething pain, a bite problem, or a change in routine may also play a part. The American Academy of Pediatric Dentistry (AAPD) describes bruxism as habitual, forceful contact between the chewing surfaces of the teeth that has nothing to do with eating, and it can occur awake or asleep. A systematic review of sleep bruxism in children found reported rates ranging from roughly 6% to nearly 50%, with much of that spread tied to differences in diagnostic criteria and to heavy reliance on parent reports.
How It Differs by Age
According to HealthyChildren.org, in most cases the grinding goes away by about age 6. The AAPD guideline similarly notes that juvenile bruxism tends to be self-limiting and does not usually continue into adulthood. Grinding sometimes appears when baby teeth are replaced by permanent ones. If it continues into the school years or teeth look chipped or worn, a dental evaluation is a sensible next step.
Care at Home
A calm, predictable bedtime routine, such as a warm bath, a story, and soft music, may help lower tension before sleep. It also helps to talk about daytime worries or changes like a new classroom, a sibling, or a move. Skipping caffeinated drinks and chocolate in the evening is reasonable. In young children, many families simply watch and mention the habit at regular dental checkups. When tooth damage is a concern, a dentist may suggest a mouth guard; HealthyChildren.org notes that a custom-fitted guard is generally better than an over-the-counter one. Because a child’s mouth is still growing, it is best to let the dentist decide whether and when to use one rather than buying one on your own.
Common Misunderstandings
Some people believe grinding means a child has worms, but that is not presented as an established cause; stress, sleep habits, and oral health are what clinicians usually consider. Another worry is that all the teeth will be ruined, yet grinding in young children is usually not harmful. A third idea is that scolding will fix it, but sleep grinding is not something a child can consciously control. Finally, many assume grinding always signals a bad bite, while studies disagree on how closely the two are linked.
When to Seek Medical Care
Grinding itself is not an emergency. However, if a child stops breathing for several seconds in sleep, snores heavily and gasps, or the lips look bluish, go to the emergency room right away. Loss of awareness, stiffening, or shaking during sleep also needs urgent medical attention. Beyond emergencies, see a dentist or pediatrician if a young child grinds loudly and has ongoing face, ear, or jaw pain, if teeth are cracked or visibly worn, if morning headaches appear, or if grinding continues after age 6. This information is based on U.S. (AAP/AAPD) guidance; if you live elsewhere, check with a local pediatrician for country-specific recommendations. This information isn’t a diagnostic tool and doesn’t replace advice from a medical professional.