Most root canals take about 30 to 90 minutes, and many are finished in a single visit. How long yours takes depends mostly on which tooth it is and how many canals it has.
Here's what actually happens during the appointment, what makes some root canals longer than others, and what to expect afterward.
What affects how long it takes
The biggest factor is the tooth. Front teeth usually have a single canal and go faster; premolars have one or two; and back molars can have three or four canals, which takes more time to clean and seal. A tooth with a significant infection, unusual canal shape, or a retreatment of previous work will also add time.
One visit or two?
A straightforward root canal is often completed in one appointment. Your dentist may split it into two visits if the tooth is heavily infected and needs medication placed inside for a week or two, or if the anatomy is complex. When it's a two-visit treatment, the tooth is sealed temporarily in between so it stays protected.
What happens during the procedure
After numbing the area, your dentist makes a small opening in the tooth, removes the inflamed or infected tissue from inside, cleans and shapes the canals, and fills and seals them. Because you're fully numb, it generally feels much like having a filling done. The relief afterward is the point: a root canal ends the pain that a deeply infected or damaged nerve causes.
The final step: filling or crown
A tooth that's had a root canal needs a permanent restoration to stay strong. Front teeth can sometimes be closed with a filling, but molars usually get a crown because they take the most force when you chew. This is often done at a short follow-up visit and is what lets a treated tooth last for many years.
Recovery
Most people go back to their day right away. It's normal for the tooth to feel tender for a few days, particularly when biting down; over-the-counter pain relievers taken as directed usually handle it. Call your dentist if pain is severe, swelling develops, or the temporary filling comes out.
Frequently asked questions
How long does a root canal take?
Most root canals take about 30 to 90 minutes. A front tooth with a single canal is usually quicker, while a back molar with several canals takes longer and is sometimes split across two visits.
Is a root canal done in one visit or two?
Many are completed in a single visit. Your dentist may recommend two visits if the tooth is badly infected, has complex anatomy, or needs time for medication to work before it's sealed. Either way, the tooth is protected between visits.
Does a root canal hurt?
The procedure itself is done under local anesthesia, so it typically feels similar to getting a filling. Most of the discomfort people associate with root canals comes from the infection beforehand — the treatment is what relieves it. Mild soreness for a few days afterward is normal and usually managed with over-the-counter pain relief.
How long is recovery after a root canal?
Most people return to normal activities the same day. The treated tooth may feel tender for a few days, especially when biting. You'll usually need a follow-up to place a permanent filling or crown, which protects the tooth long-term.
Think you might need a root canal?
Lingering tooth pain, sensitivity that won't settle, or a darkening tooth are worth checking early — the sooner a tooth is treated, the more straightforward it usually is. New guests can start with a $39 new-guest exam and X-rays (regularly $289). Find your nearest Ideal Dental to book a visit.