When the pulp tissue of a tooth becomes infected by bacteria, then Dr. Lee J. Cowles, DMD will need to heal it by removing the infected inner tissue, a procedure that is sometimes called root canal treatment. Dr. Cowles has performed hundreds of root canals, and he will remove the infected pulp tissue, clean the area, fill it with medicated material, and then restore tooth structure to its ideal beauty and function. Schedule an appointment at Cowles Dental Care if you need a root canal in Portland, Oregon, and Vancouver, Washington.