Dental root canal treatment is generally not significantly painful, a small number of people may feel a slight pain. 1. Local anesthesia will be done before the root canal treatment, and then the pulp will be opened to remove the residual material in the pulp cavity, and at the same time, the nerve will be removed, and the whole process will not have obvious pain. After the anesthesia effect wears off, there may be a slight pain, most patients can tolerate it, and it will not have any effect on the body, so there is no need to be too nervous. 2. When the nerve is removed, root canal treatment is needed, root canal filling process due to the inactivation of the nerve, there will be no obvious pain, and can not feel the pain. Daily need to do a good job of oral care, diligent brushing and rinsing, to avoid bacterial growth, resulting in pulpitis, periapical periodontitis and other diseases. If pulpitis, periapical periodontitis and other diseases have appeared, you need to consult a doctor in time to clarify the condition, and professional treatment under the guidance of the doctor to avoid adverse consequences.