Root Canal Myths vs. Facts: What the Research Actually Shows

If a search about root canals has left you more worried than informed, you're not alone. A lot of what circulates online about this treatment is decades out of date — and some of it isn't rooted in evidence at all. Here's what's actually true.

Root canal treatment removes damaged or infected tissue from inside a tooth, then cleans and seals the space to stop the problem from spreading. The tooth's root structure stays exactly where it is — only the inflamed inner tissue is removed.

The goal is simple: relieve pain, treat infection, and keep your natural tooth functioning for years to come.

No. According to the American Association of Endodontists (AAE), there is no valid, scientific evidence linking root canal treatment to cancer or to disease elsewhere in the body. This claim traces back to a theory from the early 1900s that has since been thoroughly discredited.

Studies have since confirmed there's no increased cancer risk associated with the treatment, and a 2025 study even found that successful treatment was linked to improved metabolic markers rather than any systemic harm.

This is probably the most persistent myth of all, and it's the opposite of true. Modern anesthetics mean a root canal typically feels no different from having a cavity filled.

In fact, most people who need a root canal are already in pain from the infection or damaged tissue inside the tooth — the treatment is what relieves it, not what causes it.

Saving a natural tooth is almost always the better long-term option. Nothing artificial fully replicates how a natural tooth looks or functions.

Extracting a tooth instead often means more time in treatment down the line — a bridge or dental implant to replace it, plus procedures on neighboring teeth to support the change. A root canal-treated tooth, by contrast, can often last a lifetime with proper care.

Not necessarily — a throbbing toothache is a common sign something's wrong, but it isn't the only one. A tooth can need root canal treatment even when it doesn't hurt, which is why a Specialist Endodontist tests the tooth directly rather than relying on symptoms alone.

The takeaway here matters: there's no such thing as "normal" tooth pain. If something feels off, it's worth getting checked.

The cancer and illness claims come from a theory nearly a century old, developed long before modern medicine understood what actually causes most diseases. The AAE traces the myth to poorly designed, poorly controlled research from that era — conclusions that don't hold up against how root canal treatment is studied and practiced today.

That history matters because it explains why the myth still resurfaces occasionally online, even though it was never built on solid evidence to begin with.

At Drs. Nicolas & Asp Centers, every Specialist Endodontist uses a high-powered microscope for root canal treatment — across every case, at every branch. That's not a one-off feature; it's a standard applied consistently by our specialist team, reflecting over three decades of focused endodontic experience in Dubai.

An endodontist's entire practice centers on root canal treatment and related procedures. It's not one service among many — it's the work they do every day, which means the tooth in question is being handled by someone who specializes in exactly this.

Whatever you've read online, the facts on root canal treatment haven't changed much in decades — it's safe, it relieves pain rather than causing it, and it's still the best way to keep a natural tooth. If you're unsure what your tooth needs, visit one of our dental clinics in Dubai —  in Jumeirah, Marina Walk, Springs Souk, and Uptown Mirdif, are a good place to start with a straightforward exam.

Recommended Readings