In recent years, there’s been a resurgence of concerns about the safety of root canal treatments, with some alarming claims linking them to cancer. The idea that a common dental procedure might have such serious consequences understandably worries many people. But is there any truth to the claim that root canals cause cancer? Let’s explore where this myth originated and what the science actually says.
The Origin of the Myth
The claim that root canals cause cancer can be traced back to early 20th-century research by Dr. Weston A. Price, a dentist who suggested that bacteria trapped in root-canaled teeth could lead to systemic diseases, including cancer. While Price’s work was influential at the time, it has since been widely discredited. His studies lacked proper scientific controls and have not been replicated or supported by modern research.
Despite the lack of credible evidence, these ideas resurfaced in recent years through documentaries and alternative health websites. A popular documentary, “Root Cause,” claimed that 97 percent of terminal cancer patients had root canals, a statistic with no reliable source and no scientific backing. The American Dental Association and other health organizations quickly criticized the film for promoting misinformation.
What Science Says
Modern endodontics, the dental specialty dealing with root canals, is built on decades of research, technology, and clinical experience. When a dentist performs a root canal, they remove infected or damaged pulp tissue inside the tooth, clean and disinfect the area, and seal it to prevent further infection. The procedure is not only safe but often necessary to save a natural tooth and prevent further oral health problems.
Multiple peer-reviewed studies have shown no link between root canals and cancer. In fact, some studies suggest the opposite – people who have had root canals might actually have a lower risk of certain cancers, possibly due to better oral hygiene and regular dental care.
For example, a 2013 study published in JAMA Otolaryngology–Head & Neck Surgery found that people with multiple endodontic treatments had a reduced risk of head and neck cancer. Another study in Cancer Epidemiology showed no increased cancer risk in people who had undergone root canals.
The Role of Oral Health
It’s important to understand that while poor oral health has been linked to various systemic diseases, including heart disease and diabetes, this doesn’t mean dental treatments cause those diseases. Instead, untreated infections, chronic inflammation, and neglecting dental care may contribute to health problems. Root canals are a treatment for such infections, not a cause of them.
Root canals are a safe, effective, and routine dental procedure used to treat infected teeth and preserve your smile. Claims linking them to cancer are not supported by modern science and often stem from outdated, debunked research. If you’re facing a root canal, rest assured that it’s a common treatment with a high success rate and no credible evidence connecting it to cancer.
About the Author
Dr. Kevin Grill is a graduate of The Ohio State University and has continued his education with courses focused on Invisalign and root canal treatment. He is also a member of the Ohio Dental Association and the American Dental Association. If you believe you may need a root canal, Dr. Grill and our team can handle the procedure with the compassion and expertise that we’re known for. Contact our Huntsville office today at (937) 843-3932 to schedule your appointment or visit our website.