If you’ve searched online about root canals, you may have come across alarming claims suggesting that root canal treatment causes cancer or other serious illnesses. These claims have circulated for years, but they are not supported by modern scientific evidence. In reality, root canals are considered safe, effective procedures designed to eliminate infection and preserve natural teeth. Understanding where this myth came from can help separate fact from fiction.
Where Did the Myth Start?
The idea that root canals cause disease originated from research conducted nearly a century ago. In the 1920s, a dentist named Dr. Weston Price proposed that bacteria trapped inside root canal-treated teeth could contribute to systemic illnesses.
However, modern science has shown that his research methods were flawed and do not meet today’s scientific standards. Since then, multiple scientific studies and major health organizations have found no credible evidence linking root canals to cancer.
What Does a Root Canal Actually Do?
A root canal is performed to treat infection inside a tooth. During the procedure, the dentist or endodontist removes infected or damaged tissue from the inside of the tooth, disinfects the canals, and seals the tooth to prevent bacteria from returning.
The goal of treatment is to eliminate infection, not trap it inside the body. In fact, root canals often help prevent serious complications caused by untreated dental infections, including dental abscess.
What Does the Research Say?
Modern research has consistently shown that root canals are safe and do not increase cancer risk. Organizations such as the American Association of Endodontists and the American Dental Association support root canal treatment as a safe and effective way to preserve natural teeth.
Some studies have even suggested that people with healthy, treated teeth may experience better overall health outcomes compared to those with untreated oral infections.
Why Treating Infection Matters
Ignoring a severely infected tooth can lead to worsening pain, swelling, and the spread of bacteria. Untreated infections may damage surrounding bone and tissue and can sometimes affect overall health.
Removing infection through a root canal often allows patients to keep their natural tooth while relieving pain and restoring function. Saving a natural tooth is generally preferable to extraction whenever possible.
Are There Risks to Root Canals?
Like any dental or medical procedure, root canals carry some risks, such as reinfection or treatment failure in rare cases. However, these complications are typically related to healing or bacterial contamination, not cancer.
Most root canal-treated teeth function successfully for many years with proper care. Good oral hygiene and regular dental checkups help protect treated teeth long-term.
No, root canals do not cause cancer. This claim is based on outdated, discredited research that has been repeatedly disproved by modern science. Root canal treatment is a safe and widely used procedure that helps remove infection, relieve pain, and preserve natural teeth.
About the Author
Dr. Mohamed Hegazi has more than 20 years of experience practicing dentistry. He is a 2001 graduate of Tufts University, where he earned his Doctor of Dental Medicine degree. During his 3 years in the Air Force, he attended several rotations and residencies involving oral surgery, implantology, sedation dentistry, and infection control. These experiences provided him with vital training that still sets him apart from other colleagues today. If you’re in need of root canal therapy, Dr. Hegazi and his team at Admired Smiles Dental Center would love to serve you. Book online or call (781) 678-4633.