What Causes Babies to Grind Their Teeth?

　　In daily life, some parents notice that their child grinds their teeth—a phenomenon that causes significant psychological distress and concern about its potential impact on the child’s health. So, what causes teeth grinding in infants?

　　Causes of Teeth Grinding in Infants

　　The exact cause of infant teeth grinding remains unclear but may be associated with gastrointestinal issues, oral problems, or psychological factors. If the infant has molars, parents should first rule out digestive system disorders—parasitic infections or gastrointestinal diseases are common contributors to bruxism. If teeth grinding persists after excluding gastrointestinal disease, a dental examination is recommended to assess for habits such as unilateral chewing or occlusal interference. If both gastrointestinal and oral causes are ruled out, psychological factors should be considered. Some children experience heightened anxiety or excitement over a period of time, which can lead to nocturnal bruxism. Parents should provide timely guidance; in certain cases, consultation with a psychologist may be necessary to alleviate this condition.

　　During infancy, the nervous system is still immature, making infants prone to generalized neurological excitability—manifesting as teeth grinding, limb tremors, or restless sleep. In such cases, calcium supplementation—appropriately dosed according to the infant’s age—may be warranted to nourish the nervous system and reduce neuronal excitability. Additionally, daily vitamin supplementation supports calcium and phosphorus metabolism, absorption, and utilization, thereby exerting a neuro-nourishing effect.

　　There are numerous potential causes of infant teeth grinding. Careful attention to accompanying symptoms is essential, enabling targeted treatment based on the underlying condition. We hope this information proves helpful.