Hi sir....   Grinding of teeth is medically called as BRUXISM.... causes of Bruxism: **stress and anxiety **Occlusal disturbance **sleep apnea **Missing or crooked teeth consequence of Bruxism: **Fracturing,loosening or loss of teeth ** wearing away of teeth **may even damage Jaws and TMJ problem.... Occasional teeth grinding is not a big issue But chronic grinding of teeth is a noticable issue...

Some children may grind their teeth at night. It is sometimes associated with mouth breathing. Worms are not a cause it is just a myth. No treatment is required for this at this age