Ask anyone what they think about root canals and you'll usually get a wince. It's one of the most feared dental procedures — and almost entirely undeserved. The pain people associate with root canals actually comes from the infection itself, not the treatment. The procedure is what relieves that pain, not what causes it.
Here's what actually happens: when the soft tissue inside a tooth (the pulp) gets infected from deep decay or trauma, it causes the kind of throbbing pain that keeps you up at night. A root canal removes that infected tissue, cleans out the canal system, and seals it — which is exactly why most patients report feeling relief almost immediately after, not more pain.
With modern local anesthesia, the procedure itself is comparable to getting a filling. The myth of root canals being agonizing largely comes from decades-old techniques and patients who waited too long, letting the infection spread before seeking treatment.
The real risk isn't the root canal — it's avoiding it. An untreated infected tooth can develop an abscess, spread infection to surrounding bone, and eventually require extraction instead of a save. If you're dealing with a tooth that's sensitive to hot or cold, throbs at night, or hurts when you bite down, it's worth getting checked before the situation worsens.