The cause of children grinding their teeth in bed can be caused by the presence of parasites in the body, or a disorder of the temporomandibular joint. There are many reasons why children grind their teeth in bed, the common one is the presence of parasitic worms in the body, which have no symptoms or discomfort during the day and will be released at night by grinding their teeth at night. You can usually take some worming medicine or pumpkin seeds to check if there is any improvement. Children grinding their teeth in bed may also be due to a tendency to bite their fingers during the day, or to chew on toys, which may also be expressed by grinding their teeth at night, and is related to the child’s habits. Children sleep grinding teeth may also be related to the lesion of the temporomandibular joint, the usual wide open mouth movement, or eating hard things, easily cause damage or lesion of the temporomandibular joint, which will be released by grinding teeth at night. In this case, you can use a hot towel to apply hot compresses, or eat some soft, liquid food. Children grinding their teeth in bed is in some cases caused by children’s stress, mental tension or stress, tension during the day is not released, the night will be released through the form of night grinding teeth. Usually can relax, regular life. Strengthen physical exercise. So the reason why children grind their teeth in bed may be related to parasites in the body, or temporomandibular joint lesions, or it may be related to biting toys.