my eight month old baby is chattering herbteeth continuously.why is it so?

A. Teeth chattering is usually related to shivering, which is the body’s response to cold,” There’s no established cause of teeth grinding; rather, research done over the years points to an array of possible causes. Some are physical, and others are psychological. Physical causes of toddler teeth grinding include: Pain, either from an illness, like an ear infection, or from teething. Teeth grinding is a way that some toddlers cope with the pain in their sleep. Improper alignment of the top and bottom teeth (called “malocclusion”). Medical issues. These can be everything from dehydration and nutritional deficiencies to allergies and even pinworms! Psychological causes of toddler teeth grinding are stress and anxiety. For toddlers, this stress can be caused by things like the birth of a new sibling, moving to a new house, weaning from breastfeeding, a change in schedule, etc.