Grinding of teeth (bruxism) in children can be from a wide range of reasons, but typically, we see grinding due to the following: teeth that are not aligned properly, pain (earache or any other pain in the body), stress/agitation, hyperactivity and less commonly parasitic infections (pinworms or other intestinal parasites). With limited information, the best thing I can advise is to speak with your child's pediatrician or other healthcare provider to find the cause and address the problem accordingly.
Typically when we see Bruxism (teeth grinding) it is usually relating to some kind of stress in a child's life. You can try incorporating some down time before bed or relaxation time w/tummy massage or diffuser w/essential oil in your daughter's bedroom to help ease her to sleep and help her stop grinding her teeth. Another thing
that can ease teeth grinding is a good distractor such as a doll or something they can hold or play with like a nubby ball. Something with texture tends to calm children down.
Check diet and look at constipation issues or stomach issues. When children are prone to digestive issues or are not getting enough fluids, they can have teeth grinding issues.
There are a great deal of other factors that can cause teeth grinding. Be sure to get her checked out by her dentist as well.
Lori M. Dubetz, ND