Root canal treatment for braces will take about twenty days, and the preliminary root canal treatment will take half a month. Only after a perfect root canal treatment, the root canal will be tightly filled, and at this time, it can be ensured that the bacteria will no longer attack the root canal, and there will be a recurrence of pain, and then the upper part of the braces can be restored. Braces can be made in the final step of the root canal treatment, at the same time, tooth preparation and oral molding, molding is not the final step, but also need to send the model to the processing plant, waiting for about 7-10 days, the processing plant will be ready to send back to the doctor’s hand, the doctor will make an appointment for patients to come to wear the teeth. At this time, the crowns can be tried on for fitting, and if the braces are made to fit properly, the patient can wear them away on the same day. If the braces are too tight, too loose, or the bite does not fit, they can be returned to the fabricator for modification, and the time will be extended appropriately.