How can I have pain after my root canal treatment was completed?
As we discussed previously the root canal procedure involves removing the pulp tissue and or its remnants and replacing it with a filling. The purpose of this process is to simply eliminate the home for bacteria. If the discomfort after the root canal is short term, one or two weeks, it may just be that the supporting tissues are simply irritated and will calm down. Since the space the pulp occupies is really a complex system of canals, it may be that the entire pulp was not removed nor its space completely filled in when the root canal was initially done. Since there are small openings in the root surface where the blood vessels enter to feed the pulp, the bacteria that persist in the root canal system and their toxins the pulp chamber into the surrounding tissues and pain or swelling results. In this case re-treatment of the root canal may be necessary with the goal of more completely removal of the pulp tissue and filling of the root canal system.
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About Dr Grenn
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Dr Joseph J. Grenn, a native of Boston, Massachusetts, has been in private endodontic practice for over 20 years. He received his dental degree from Tufts University School of Dental Medicine and completed his postgraduate residency in endodontics at Harvard School of Dental Medicine. A pioneer in the development of endodontic microscopic treatment, Dr. Grenn is a past president of the California Association of Endodontists, a Harvard fellow, assistant clinical professor at the University of California San Francisco School of Dentistry, and staff member of Kaiser and CPMC hospitals. In addition, Dr. Grenn is an international lecturer on utilizing innovative technology to provide the best of care. A charter member of the American Association of Microscopic Endodontists, he has also been honored with a life membership in the American Dental Association, California Dental Association and American Association of Endodontists. 
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