As the saying goes, a toothache is not a disease, but a pain that really kills. This disease with toothache as the main clinical manifestation belongs to endodontic or periapical disease, and its most effective treatment is endodontic surgery. We know that teeth are the hardest organs in the human body. In the center of the thick tooth hard tissue there is a canal cavity, professionally called the pulp cavity and root canal, which is the pulp tissue containing the nerve vessels. Once the pulp tissue is stimulated by bacteria and other factors, it will become infected and lead to pulp disease. Those of you who have experienced this will certainly not forget the severe pain that prevents you from sleeping at night, at this time, medication and injection often do not help, and the most effective and immediate treatment is root canal therapy. Some of you may ask: I have not done root canal treatment, how come I don’t have any pain afterwards? If the pulp infection is not treated, it will slowly become necrotic. At this time, you may feel that the tooth pain problem is solved, but the bacteria in the necrotic pulp is gradually developing towards the root tip, which will eventually lead to periapical inflammation. At this time the tooth can appear to bite something painful, swollen gums up flow thick and other symptoms, but also lead to the resorption of alveolar bone destruction, although some anti-inflammatory drugs can temporarily relieve the degree of inflammation, but can not remove the cause of the disease, the root cause of the method or root canal treatment surgery. 2.How to do root canal therapy The purpose of root canal therapy is to remove all the infected pulp tissue, control inflammation, and promote the healing of periapical tissue. In order to achieve this purpose, we first prepare an entrance on the tooth, then use special professional instruments to enter the root canal, gradually clean out the infected pulp tissue while expanding the infected root canal wall, disinfect the root canal with various drugs, fill the root canal with corresponding materials after the inflammation is controlled, and repair the tooth defect, of course, all operations are carried out under the premise of painless and sterile, for Pulpitis is often treated under local anesthesia. Generally speaking, root canal treatment usually takes two or three times, with an interval of 5-7 days each time. 3. Is root canal treatment complicated? It is easy to say, but it is really quite complicated to do on each specific tooth. First of all, the root canal system in each of our teeth is quite complex, and it is not a spacious and prosperous avenue, but a curved and twisted dendritic structure, and our instruments can only clean the trunk, which is the main root canal, and it is simply impossible to remove 100% of the infected tissues in the system. Multiple tools work in concert. In addition, during the treatment process, the doctor cannot operate under the direct vision of the naked eye, and x-rays can only be observed from a certain angle, so it relies a lot on the experience and skill of the doctor. In the United States and other developed countries, not all dentists are allowed to do endodontic procedures, and only those who are qualified as specialists can perform them.