Why must root canal treatment be done more than three times?

Root canal treatment, as the main method for the treatment of pulpitis and apical inflammation, has high technical requirements for dentists, so in general, it is necessary to perform step-by-step treatment: first open the pulp to kill the nerve, then expand the root canal, seal the medicine, Dressing changes and fillings usually take two to three times, and more complicated conditions may be more common.

The reason why it is so troublesome that I have to go to the hospital two or three times is because: 　　

First, when going to the doctor, the infected pulp may be only part of it, but this part is inseparable from other pulps. The pulp gnawed by bacteria must be wiped out. But now we are facing a problem, that is, in the small pulp cavity, where the bacteria have traveled to, it is difficult to distinguish between the good and the bad of the dental pulp, and the bad pulp will inevitably touch the good pulp. . And good pulp, that is, normal dental pulp, the most prominent and distinctive personality feature is sensitivity, and it is easy to perceive stimuli such as hot, sour, sweet and so on.

Second, the instrument used in root canal treatment, that is, the frustration tube that pulls out the pulp, has uneven threads on the surface. At this time, you need to make up the process of scraping carrot shreds with the grater on your own. Here, the carrot is set to a static state, and the grater moves up and down. Each time the grater is pushed down, a small pile of shredded carrots will grow underneath, and on the carrots, there will be ridges of ridges left behind, waiting for the next grater to grind. Root canal treatment is the same. When the canal is set down and then up, only a small part of the bad marrow can be scraped, and the rest can only be pulled and scraped repeatedly. Combined with reason one, inactivation of the good marrow, scraping and scraping of the damaged marrow, anti-inflammatory observation, repeat the same steps, with an interval of about one week each time.

Third, the internal situation of the root canal is not as distinct as it appears, and the canal is clear. Its condition is the same as the well-developed root system of trees. It is very complicated, and it is generally impossible to take care of all of them in a single treatment (unless some special circumstances). All the answers to dental problems are in fact one sentence in the end: be diligent, put on a snack on the teeth, do daily care, treat the loss in time if discomfort occurs, and go to the hospital to receive various success rates when it is more serious than the dental disease. , There are too many treatments with unbreakable side effects~