What is the matter with children sleeping and grinding teeth?

Children sleep with molars phenomenon, may be caused by emotional and mental factors of children, such as if children learn more nervous during the day, or play more tired during the day, or too excited before going to bed, or fear before going to bed, etc., may cause night molars phenomenon. If the child likes to sleep at night, or like to sleep with his head covered, it will also cause the phenomenon of sleeping and grinding teeth. In short, the cause is more.