Does a root canal really hurt? What actually happens in the chair
The fear is almost always worse than the treatment. Here is the procedure step by step, why a single sitting is now normal, and what the days afterwards feel like.
Ask ten people what they are most afraid of at the dentist and most will say the same two words. The reputation comes from a version of the treatment that was slower, blunter and far less predictable than what happens in a modern clinic. In practice, a root canal removes the source of pain rather than causing it.
Why a tooth needs one in the first place
Inside every tooth is a soft core of nerve and blood vessels. When decay, a crack or a knock lets bacteria reach that core, it becomes inflamed and then infected. Once that happens the tissue cannot heal on its own — the pressure has nowhere to escape, which is exactly why the ache becomes constant and starts keeping you awake. Removing the infected tissue is the only way to keep the tooth.
The treatment, step by step
Imaging and anaesthesia
The tooth is imaged so the canal shape is known in advance, then fully numbed. You should feel pressure and vibration, never pain — and if you do, we stop and top up.
Cleaning the canal
The infected tissue is removed with rotary instruments — quieter and far quicker than the hand filing this replaced — and the canal is disinfected and shaped.
Sealing
The space is filled and sealed so bacteria cannot re-enter. This is the step that decides whether the treatment lasts a decade or a lifetime.
Restoring the tooth
A treated tooth is more brittle than it looks, so a back tooth almost always needs a crown. Where the tooth allows, we fit it the same day.
“The procedure was smooth and painless. She explained every step, ensuring I felt comfortable.”
Why one sitting is now normal
Multi visit root canals were standard when cleaning the canal took much longer and there was no reliable way to confirm it was clean. Rotary instrumentation and better imaging changed both. Unless there is active swelling or an unusually complex canal, most cases here are completed in one appointment of roughly an hour.
The days afterwards
Expect the tooth to feel tender to bite on for two or three days, which ordinary painkillers handle comfortably. The deep, throbbing ache that brought you in should be gone as soon as the anaesthetic wears off. Chew on the other side until the crown is fitted, and call us if tenderness is increasing rather than settling after day three.
- The treatment relieves pain rather than causing it
- Most cases are done in a single sitting of about an hour
- Back teeth need a crown afterwards to avoid fracture
- Tenderness for two to three days is normal; increasing pain is not
Tooth keeping you awake?
Emergency slots are held daily. Call the clinic and we will see you the same day.
