Bruxism, or the grinding of teeth, is remarkably common in children and adults. For some children, this tooth grinding is limited to daytime hours, but nighttime grinding (during sleep) is most prevalent. Bruxism can lead to a wide range of dental problems, depending on the frequency of the behavior, the intensity of the grinding, and the underlying causes of the grinding.
A wide range of psychological, physiological, and physical factors may lead children to brux. In particular, jaw misalignment (bad bite), stress, and traumatic brain injury are all thought to contribute to bruxism, although grinding can also occur as a side effect of certain medications.