Usually stress relat: Teeth grinding is usually related to stress or apprehension. In a three year old it could be related to a number of things. The child has to stop on their own although they are not cognizant they are doing it at night. . Dentists can make a night guard to prevent damage to the teeth but the ultimate fix is to try and discover why the child is grinding. They could also just grow out of it.
Answered 6/11/2013
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