Toothache nerve leakage caused by pain, can be opened through the pulp drainage, drainage out of the material inside, reduce the pressure in the root canal, can help relieve pain. Tooth exposed nerve, can cause severe pain, it is recommended not to deal with their own, you can go to the regular hospital stomatology department for examination, to see the site of caries and depth of caries, but also to take pictures of the examination, to understand the extent of the disease. If it has been connected to the pulp, the decayed and necrotic tissues inside the caries are dug out through instruments, and the inflammatory exudate inside the pulp, is drained into the mouth. The pain can be effectively relieved when the pulp volume is reduced. The corner of the pulp is closer to the surface of the tooth, if the patient’s pain symptoms are more obvious, can be treated by opening the pulp drainage, the pain can be relieved immediately. Toothache reveals the nerve, it is recommended to pay attention to diet, do not eat cold spicy stimulating acidic food, to avoid leading to the aggravation of the symptoms of pain, it is recommended to go to the hospital stomatology department, please ask the doctor to deal with.