Gum bulge after root canal treatment usually can not be eliminated by itself, you need to visit the hospital, the professional doctor to clarify the cause of the disease for treatment. Gum bulging after root canal treatment may be an acute attack of apical periodontitis, or periodontal inflammation, or the root of the tooth may be fractured. Gum bulges in these cases usually do not go away on their own. The emergency treatment is to incise and drain the gum bulge or to puncture and drain it. Root canal retreatment, periodontal therapy, and extraction are performed accordingly. There may be other reasons for the bulging gums after root canal treatment, it is recommended to go to the hospital in time, complete the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.