My dentist did a root canal on my upper far left tooth.  It was done in two sessions, totaling 5.5 hours.  He said there were 3 roots and that it was difficult.  It has been 6 weeks since the last session.  Apparently, according to the x-ray done afterwards, he went too far into the canal and it came out the other side.  His assistant explained what happened, but the doctor just said it was a difficult tooth.  I am still having pain in the gums above the adjacent tooth, way inside.  Is this normal to still have pain?
Hi, With your query, usually when the root canal filling went beyond the required length if it is too minimal provided with no periapical infection then it is fine if there is infection then it results in pain if symptoms persist ask you dentist to redo the root canal by taking out the filled material. If it is anterior/front teeth one can apicoectomy to remove excess material but in behind/posterior meet it is difficult. Kindly consult your endodontist for the perfect treatment and suggestion. Hope this helps you.