Grinding teeth is a direct injury to teeth. Brushing your teeth every night will make your teeth wear prematurely and the outer enamel will be worn away. Exposing pulp will cause dentin hypersensitivity, and it will cause pain when it is stimulated by cold, heat, acid and sweetness. In addition, periodontal tissue is damaged, which easily leads to nocturnal grinding of teeth and continuous contraction of facial muscles, especially masticatory muscles. Over time, the masticatory muscle fibers become thicker and the face becomes square, which affects the bodybuilding of the child's face. If the tooth tissue is seriously worn, the height of the teeth is reduced, and the facial muscles are overtired, temporomandibular joint disorder syndrome will appear. When talking, singing or eating, the mandibular joint and local muscles are sore, and it is even difficult to open your mouth. When you open your mouth, the mandibular joint will hiss, and some even dislocate. In addition, it can also cause headaches, insomnia, memory loss and other symptoms.

1, parasitic factor

The child has a bug in his stomach. It plunders all kinds of nutrients in the small intestine, secretes toxins, scurfs up and down, and is extremely restless. Stimulate the intestinal tract to accelerate peristalsis, causing indigestion and dull pain around the navel, which will make the child's nervous excitability unstable during sleep and cause molars. Children with pinworm disease often climb to the anus to lay eggs after sleeping, causing anal pruritus, and children will grind their teeth when fidgeting at night.

2. Dietary factors

Children with bad habits of picky eaters and partial eclipse are prone to lack of calcium and vitamins; Some children often "don't want to eat breakfast, but stick to dinner", which is easy to cause digestive dysfunction. Because I ate too much dinner, there was food in the gastrointestinal tract when I slept, and the gastrointestinal tract had to work overtime to complete the task of digestion and absorption. When the stomach is working, it will also lead to spontaneous contraction of facial masticatory muscles and teeth grinding back and forth.

3. Psychological factors

Family disharmony and parents' divorce will traumatize children's minds; School-age children are reprimanded by their parents for their tight homework or poor study; Some people watch TV at night and have thrilling martial arts scenes, which easily cause negative emotions such as anxiety, depression, irritability and excessive tension, leading to the phenomenon of grinding their teeth at night.

Always grind your teeth at night and pay attention to tooth protection.

What should I do if I have night molars? Experts say that after discovering molars, we must first remove all kinds of stimulating factors that lead to molars. If grinding teeth has become a habit, you should carry out behavior correction.

Under normal circumstances, the upper and lower teeth should be separated by 2-4 mm when you don't chew, and it is easy to grind your teeth if you contact too closely. Wearing a tooth pad when sleeping can open the temporomandibular joint, reduce muscle tension, make the mandibular movement smooth and reduce tooth wear. Hard pads are generally used, and soft pads are easy to bite flat. However, it is difficult to cure bruxism with dental pads, especially after the age of 25. Moreover, wearing a tooth pad is equivalent to putting an extra foreign body in the mouth, which often causes discomfort and affects sleep at night.

Experts suggest that you should wear dental pads from the daytime and wear them for a longer time every day. If the shape of the dental pad is not suitable, the temporomandibular joint will open too wide, which will stimulate the molars. Therefore, after wearing it for a week and a month, I need to see a dentist for adjustment and long-term follow-up.