How is bruxism related to age?

Teeth grinding is common in children. However, because their teeth and jaws change and grow so quickly it is not usually a damaging habit that requires treatment and most outgrow it by adolescence. 

For the adults the problem can be more severe and requires treatment. In adults teeth grinding is often the result of stress. Teeth grinding can be caused not just by stress and anxiety but by sleep disorders, an abnormal bite or teeth that are missing or crooked. It is necessary to determine the cause of teeth grinding in order to treat and stop the problem. See your dentist for treatment options.

Bruxism is more likely and more severe in adults, since adults often suffer higher levels of anxiety and stress than children. Children can develop bruxism, most often as a result of misaligned teeth, or pain due to earaches and teething. Bruxism in children usually resolves itself with treatment of dental problems. Adult bruxism may require massage, physical therapy and relaxation exercises, as well as dental splints or surgery.