Teeth grinding is not caused by the lack of certain vitamins. There are many clinical reasons for teeth grinding, which may be caused by genetic factors, psychological factors, teeth biting relationship, as well as abnormalities of temporomandibular joints, intestinal parasites and other factors. 1. Genetic factors: If both parents or one of them has the habit of grinding teeth, their children will have the habit of grinding teeth. If both or one of the parents have the habit of grinding teeth, the probability of their children having the symptoms of teeth grinding is relatively high, therefore, teeth grinding may be related to the genetic problem of parents. 2. Psychological factors: usually too much mental tension, too much psychological depression, etc., may lead to the human body into a state of rest after the subconscious mind is still in a state of high tension, thus appearing the symptoms of teeth grinding, the need for psychological adjustment in order to improve the problem of teeth grinding. 3. Teeth bite relationship: the teeth bite relationship in the mouth is not normal, may also lead to symptoms of teeth grinding, need to adjust the bite relationship in time. 4. Temporomandibular joint disorder: Inflammation and abnormal movement of temporomandibular joints may also induce the symptoms of nighttime teeth grinding, and it is necessary to improve the temporomandibular joint disorder in order to alleviate the symptoms of teeth grinding. 5. Intestinal parasitic diseases: When there are parasitic infections such as roundworms in the intestines, the symptoms of teeth grinding may also occur. Therefore, teeth grinding is not caused by lack of vitamins, it is best to go to the hospital in time for relevant examinations to confirm the cause of the disease and then carry out symptomatic treatment.