One of the reasons the documentary
Root Cause resonated so strongly with patients is that it gave language to something many people have felt for years: that after a root canal,
something still did not feel quite right.
As a periodontist and oral surgeon who regularly evaluates infected root canal teeth, I have seen this firsthand. A patient is often told that the tooth was treated successfully, that the infection is gone, and that there is nothing more to worry about. And yet, months or even years later, they continue to experience chronic inflammation, gum issues, sinus pressure, jaw discomfort, fatigue, or simply the sense that their health has changed after the procedure.
To be fair, root canal therapy was developed with good intentions. In conventional dentistry, it is considered a standard method of saving a tooth that would otherwise be removed. In some cases, it can appear to work well for a period of time. But the reality is more complex, and patients deserve honesty about that complexity.
The internal anatomy of a tooth is extraordinarily intricate. It contains microscopic tubules, accessory canals, and tiny spaces that are impossible to fully disinfect with complete certainty. Even in the most skilled hands, conventional root canal therapy cannot guarantee that every bacterium, every toxin, or every area of infected tissue has been eliminated. That is not an attack on dentists. It is simply a biological limitation of the procedure itself.
And this is where I believe conventional dentistry has, at times, been less candid than it should be.
Patients are often given the impression that a root canal is a definitive fix. In reality, it is better understood as an attempt to manage a problem inside a structure that cannot be perfectly sterilized. Sometimes, that management holds. Sometimes it does not. Unfortunately, residual infection is more common than many patients realize, and more common than the profession has historically been comfortable admitting.
My goal is not to create fear. It is to create informed consent.
Patients should understand both the short-term and long-term ramifications of root canal treatment. They should know that the absence of pain does not always mean the absence of disease. They should know that
a lingering infection in or around a root canal tooth may continue to affect the surrounding bone and gum tissue, and, in some individuals, overall systemic health. And they should know that alternative treatment options exist.
That may include
careful imaging, biologic evaluation of the tooth and surrounding jawbone, retreatment in select cases, or extraction when a tooth has become a chronic source of inflammation. These are important conversations, and patients deserve access to all of them before making a decision.
That is part of why
Root Cause mattered. It encouraged people to ask better questions and to look more deeply.
I also recorded
a webinar on the management of infected root canal teeth for patients seeking a clearer understanding of the issue. My hope is that
every patient has the opportunity to make a truly informed decision, grounded not in biology or evidence but in long-term health.
