Teeth grinding can cause dental problems since the pressure exerted can damage teeth and even the jaw. Headaches and earaches are also common in those who grind their teeth.
Teeth grinding is claimed to be triggered by stress and to get rid of it I drink a warm glass of milk which has a teaspoon turmeric powder added to it at night before I go to bed.
I also (when I remember to) compress the jaw area with a warm wet wash cloth as this helps to relax the jaw muscles. Unfortunately though my son refuses to drink the turmeric and milk although he doesn’t mind compressing the jaw area with a warm wet washcloth.