Bruxism (teeth grinding) can cause abnormal tooth wear, damage to periodontal tissues, jaw joint and muscles. Early diagnosis not only creates a perspective for the control of the disease, but also prevents damage to the chewing system components and increases patient comfort. We can say that various factors such as local (occlusal interferences), systemic (central nervous system disorders, asthma, rhinitis), psychological (stress, anxiety), occupational (racing sports), hereditary factors, sleep disorders and parasomnia are effective in the etiology of bruxism. Studies have reported that anxiety is one of the prominent factors in the development of bruxism in children. Tension, anxiety, or fear can trigger teeth grinding. When anxiety is treated with psychological techniques or medications, the signs of bruxism seem to be reduced. Bruxism in preschool children; It has been found to be associated with internal problems such as anxiety, depression, unhappiness and somatic complaints. Early diagnosis of bruxism is important in order to protect the teeth from damage such as mobility, trauma and headache. The bruxism observed in children should be evaluated in multiple ways and the factor should be investigated. As soon as it is noticed, it is absolutely necessary to take the child to a pedodontist. If the child has a systemic problem, considering that bruxism may be related to this condition, it should be directed to a specialist doctor about the current systemic condition and the problem should be eliminated or taken under control. In addition, local and psychological factors should not be ignored.