Thomas E. Levy, MD, JD, is a board-certified cardiologist and attorney. He was inducted into the Orthomolecular Medicine Hall of Fame in 2016. According to Dr. Levy, all root canal-treated teeth are infected and toxic. In this article published in JOM ion November 1, 2016, Oral Pathogens: A Common Cause of Chronic Disease, he wrote:

And while no part of the body can completely avoid the regular delivery of these toxic pay-loads, they are especially prone to go via the lymphatics into the chest, neck and head. The venous drainage ends up impacting especially severely the coronary and carotid arteries.

And I stopped.