This is a common question that patients ask when they visit the dentist after a toothache, and the common term for this is nerve extraction and nerve rot. The professional term for this is root canal therapy. Root canal therapy is the main method of treating pulpitis and periapical inflammation, and is also the more thorough method. However, some places will also opt for a dry curettage, which is also a method of rotting the nerve and is not routinely used, but only in certain cases. Okay, today we will mainly talk about rotting nerves. It mainly includes the following three aspects, please you can briefly understand. First, what symptoms indicate that the dental nerve is inflamed and should be extracted and rotten nerve? Generally you have the following symptoms are considered inflammation of the tooth: there has been cold water hot water pain, or bite something embedded in the pain, just open hi may be just a little pain, and then slowly pain will last for a period of time, and then is not eaten when the pain will also be pain, at night, and even wake up in pain is also possible. Sometimes you can take medicine to relieve it, and sometimes medicine doesn’t work anymore. We say that this time is the inflammation of the tooth nerve, which we call pulpitis. There is also a case where there is a cavity in the tooth and food is embedded in it, and it hurts when it is embedded, but the doctor will also say that the nerve is rotten after the examination. Usually this is because the cavity of the tooth is very large and the decayed tooth is blocked in the cavity. When the doctor removes the decayed tooth structure, the nerve is already touched and that means the nerve is exposed and the nerve needs to be decayed. Previously, we talked about pulpitis. If you don’t go to the hospital at this time, take medicine by yourself or perhaps reduce the pain after a few days, or if the pain is always vague and not very intense, it may develop into apical inflammation, and the more obvious symptom is that the tooth will hurt when you bite on it, you can’t chew, and sometimes the tooth has the feeling of floating out. The more serious is that you can’t even touch it. Then, if you don’t see a doctor, the pain may be relieved all of a sudden, but you may see the flesh of the tooth swell up and there may be pus. This progresses to apical infection. These require root canal treatment. Second, what steps are needed for root canal treatment (rotten nerve)? Generally, root canal treatment requires three steps: The first step is to first rotten and extract the nerve, which used to be commonly used to seal the medicine in the tooth, and the doctor will say that after sealing the medicine to go back to the rotten nerve, the next time it comes, it will be less painful. Nowadays, you can choose to seal the medication or have the nerve removed directly under local anesthesia, but it is generally difficult to remove all the nerves in the first step, so many people will have mild or even severe pain in the second visit, but it is usually significantly better than before. The second step is to remove the remaining nerve and clean out the root canal, which is done by inserting a small needle-like object into the tooth, sometimes with the patient’s mouth open, to take a radiograph. This is to determine the length and shape of the root so that the root canal can be cleaned out thoroughly. However, sometimes there are cases where the root canal does not work, which makes the treatment more difficult and may increase the number of visits and may affect the outcome of the dental treatment, as the doctor will usually tell the patient during the treatment. The third step is the root canal filling, which is the filling of the root canal that has been cleaned to prevent bacteria from re-invading the root of the denture. Then the hole in the tooth is filled. After the three steps of treatment, the doctor will usually recommend the patient to get a brace, mainly to avoid the tooth from fracturing when biting on hard things, which would not be retained. In fact, the purpose of this step is to better preserve the tooth, otherwise the hard-working tooth cannot be used, or if it cracks when biting, it will have to be extracted. However, some doctors may also recommend to do inlays, or a pile and then do braces, which are based on the situation of the teeth can choose to protect the teeth of the method, the specific problems can be consulted to your treatment doctor. Third, the reaction during and after treatment, how long can the tooth be used after treatment? Generally, there may be pain during and after the root canal treatment, which is related to some of the following factors: 1, the situation of the affected tooth itself, if the tooth has been more serious inflammation before treatment, then the treatment process may reduce the inflammation, so that the pain will feel less, but not necessarily no. There may also be aggravated, because the original inflammation has not yet developed, treatment to stimulate it, it is equivalent to accelerate the inflammation of the tooth, but this situation is relatively less, so we do not have to worry too much, generally will be improved. And the inflammation is more heavy teeth, after treatment may also have discomfort for a period of time, but this feeling is relatively mild, and does not affect the normal use, we basically consider the treatment is successful, pending further observation. 2, the treatment process also feel to eat hot, cold, sour and sweet pain, then first to suspect whether it is a problem of other teeth, because the general extraction of the nerve teeth will no longer have the symptoms caused by the stimulation of the dental pulp. 3, the treatment process if improperly operated, may also cause pain, the improper operation mentioned here is not a medical error, but only inevitable instruments in the treatment process will stimulate the periapical tissue. You have to understand the doctor who performs the root canal treatment, because only these doctors operate “blind”, based on patience, experience and feel, the roots of the teeth buried in the bone is completely invisible. It is a big project to clean such a tiny canal, and if it is not clean, it is impossible to wrap the braces even if you want to. Because it is the same as a house cannot be built without a good foundation, and there will be problems even if it is built. So please be patient with your treating doctor. 4, root canal sealing medicine, root canal is contaminated with bacteria, so in the inside of the seal medicine is to further remove bacteria, so will choose some may have the stimulation of the drug, and each person’s reaction to the drug is different, although not too big a problem, but may cause dental discomfort, the general doctor will give you instructions, such as the pain is very strong, get the drug out. But the probability of this happening is not high either.