Tooth paroxysms may be due to inflammation of the dental pulp. In chronic pulpitis, there are occasional bouts of tooth pain, usually with a long history, sometimes with acute pulpitis, or with pulp necrosis, which can be treated with root canal therapy, which involves drilling the tooth open, removing the nerve inside the tooth, and removing the infected material and flushing it with sodium hypochlorite, hydrogen peroxide, saline, etc. At the same time, EDTA root canal lubricating gel can be used to prevent fracture of instruments such as enlargement needles. In addition, anti-inflammatory drugs such as formaldehyde cresol, camphor phenol, calcium hydroxide, pomegranate oil and other preparations need to be put in. After observing no symptoms for about a week, root canal filling and crown sealing can be performed and braces can be made to cover the tooth to ensure that it has fracture resistance.