When I woke up in the morning, my friend said that I grind my teeth in my sleep, and it was a little scary, I really didn’t know I had this problem before. It’s strange, why would I grind my teeth? Grinding your teeth at night may be a “heart disease”. The cause of teeth grinding is still not clear, but we can consider that there are three general factors. One of the reasons is the presence of parasites in the body, such as roundworms and pinworms. This is because parasites secrete some toxins that stimulate the nerves and affect the autonomic nerves, making them excited. During the day, we are more conscious and can control our behavior and demeanor, but after going to sleep, we unconsciously grind our teeth. In addition, some of the metabolites excreted by the worms will continue to stimulate the corresponding parts of the brain that are asleep, so that the masticatory muscles continue to contract, resulting in teeth grinding. Some people usually do not grind their teeth at night, but if just before going to bed after watching horror and nervous movie or novel, due to the nervous system is too excited, will also appear at night grinding teeth. This is mainly caused by mental factors. In addition, a factor that can not be ignored for psychological factors, suggesting that many of our suppressed emotions, and most adults grinding teeth belong to this category of vegetation. Many scholars have found in their research that people grind their teeth in their dreams when they are trying to escape from subconscious psychological pressure. Psychologists believe that teeth grinding is a phenomenon caused by refusal to express anger and hatred. Analyzed from a psychiatric perspective, teeth grinding represents a psychological condition that is especially prominent when angry, anxious, resentful, pessimistic and abused. The psychological condition expressed subconsciously by these people is one of frustration and dissatisfaction. The results of investigations and analyses by many scholars have also shown that people with teeth grinding are more pessimistic than non-grinders, so it is important for people who grind their teeth frequently to regulate their emotions. Teeth grinding is also a disease. Teeth grinding is a long-term, vicious circle of disease in which people habitually grind their teeth during sleep or unconsciously grind their teeth during the day, which worsens little by little over time. Teeth grinding can harm your teeth. When you grind your teeth, the upper and lower teeth wear each other down. Once the enamel on the surface of the teeth is excessively worn down, it will expose the dentin, which will become hypersensitive to chemical stimuli such as cold, heat, acid and sweet, or physical stimuli such as hard objects, causing soreness and pain. In severe cases, even pulpitis, occlusal trauma, periodontal tissue damage, temporomandibular joint damage, and chewing muscle damage can occur. Teeth grinding can affect image. People who have the habit of grinding their teeth at night usually also feel soreness in their facial muscles when they get up early the next morning, limited mouth opening, popping and pain in the temporomandibular joints in front of the ears when opening and closing their mouths and discomfort in the hidden swelling of the teeth, which is due to the fact that the patient’s oral cavity is in motion throughout the night, which aggravates the loads on the perioral muscles, temporomandibular joints, and the teeth. WARNING: People who grind their teeth occasionally should rest and adjust their routine, while those who grind their teeth frequently at night (at least once every week) need to seek medical help. If necessary, get a pair of braces and use them while sleeping to prevent your teeth from wearing down.