A root canal is a dental treatment designed to relieve pain, not cause it. With modern local anaesthetic, the procedure itself is usually rated around 2 or 3 out of 10, much like having a routine filling. The real discomfort tends to come from the infection beforehand, not the treatment that fixes it.
If you have been quietly dreading a recommended root canal, you are not alone. It is one of the most misunderstood treatments in dentistry, and a lot of the fear comes from old stories rather than how the procedure actually feels today. Below we walk through exactly what to expect, before, during and after, so you can walk in knowing what is coming.
How painful is a root canal on a scale of 1 to 10?
Quick answer: During the procedure, most people report a 1 to 3 out of 10 (mostly pressure, not sharp pain). The infection beforehand is usually the painful part, often an 8 to 10 out of 10. The root canal is what brings that down.
The reason a root canal has a bad reputation is timing. By the time root canal treatment is recommended, the nerve inside the tooth is often already inflamed or infected, and that is what causes the throbbing, sleepless ache people remember. The treatment removes the source of that pain. So the lasting memory of “agony” usually belongs to the infection, not the appointment.
Dental associations and patient experience surveys consistently report the same thing: people who have actually had a root canal tend to describe it as far more comfortable than they expected, and broadly similar to having a filling. Local anaesthetic is the key. Once the area is properly numb, the nerve cannot send pain signals, so the cleaning itself is felt as movement and pressure rather than pain.
Try this now: the anxiety script
Nervous patients often manage far better when the team knows in advance. Copy and paste this into your booking message or read it out at reception:
“I have high dental anxiety and I am sensitive to pain. Before my root canal, can we talk through extra numbing and any options to help me stay comfortable?”
The numbness check. You should never feel sharp pain once treatment begins. Before any drilling starts, you can confirm you are fully numb with a quick three step check:
- Tell your dentist if the area still feels normal or “alive” rather than numb and heavy.
- Ask them to test the tooth gently before starting, so you both agree it is ready.
- Agree on a simple stop signal (raising your hand) that you can use at any time.
A good dental team will always wait until you confirm you are comfortable. Speaking up is welcome, not a nuisance.
What is the worst part of a root canal, and how long does it take?
Quick answer: For most people the hardest part is simply keeping the mouth open for a while, not pain. A root canal usually takes about 1 to 2 hours depending on which tooth is involved and how many canals it has.
Front teeth tend to be quicker because they have a single canal. Back molars take longer, as they can have three or more canals that each need cleaning and sealing. Here is roughly how the time breaks down on the day:
| Stage | Roughly when | What you will feel |
|---|---|---|
| Numbing | First 15 minutes | A small pinch, then a spreading warmth and heaviness as the area numbs. |
| Cleaning | Around 15 to 60 minutes | Vibration and pressure as the canals are cleaned. No sharp pain when fully numb. |
| Sealing | Final stage | A comfortable, filling style finish that closes the tooth. |
Small things that make the appointment easier
- Apply lip balm before you arrive, so your lips stay comfortable while your mouth is open.
- Ask for a bite block, a soft rubber rest that holds your jaw open so your muscles do not have to work.
- Bring headphones and something to listen to. A downloaded podcast or playlist makes the time pass quickly.
Crown or root canal: which one is worse?
Quick answer: Neither is really “worse”. They do different jobs. A root canal treats infection inside the tooth, while a crown protects and strengthens a tooth from the outside. In fact, a tooth that has had a root canal often needs a crown afterwards to protect it.
It helps to think of them as a team rather than a choice. The root canal saves the tooth from the inside. The crown then caps it so it can handle everyday chewing again. Here is how the two compare:
| Criteria | Root canal | Crown |
|---|---|---|
| Comfort level | Comfortable once numb, often compared to a filling. | Comfortable, mostly preparing and shaping the tooth. |
| Time involved | Around 1 to 2 hours, sometimes over two visits. | Usually two visits while the crown is made. |
| Recovery | Mild tenderness for a few days, eased with simple pain relief. | Minimal, with some short term sensitivity. |
| Purpose | Removes infection from inside the tooth. | Protects and strengthens the tooth from the outside. |
A simple way to tell which you need
Is the nerve inside the tooth infected or dying (often felt as deep ache, throbbing, or lingering sensitivity)?
↓ Yes: a root canal is usually the treatment that addresses it, and a crown is often recommended afterwards.
↓ No, the tooth is mainly cracked or worn but the nerve is healthy: a crown on its own may be enough.
Your dentist is the right person to confirm which applies to your tooth. Good questions to ask at your appointment include: will I need a crown after my root canal, and if so, when is the best time to have it done? You can read more on our crowns and bridges page.
Recovering from a root canal: the first 48 hours
Quick answer: Any tenderness usually peaks within the first 12 to 24 hours and is generally well managed with over the counter pain relief. Most people are back to normal within a few days.
Recovery from a root canal is usually straightforward. The tooth and surrounding area may feel a little tender as everything settles, particularly when biting down. Here is a simple guide to the first couple of days. Always follow the specific advice your dentist gives you, as it is tailored to your tooth.
| When | What to do |
|---|---|
| Straight after | Wait until the numbness has fully worn off before eating, so you do not accidentally bite your cheek, lip or tongue. |
| First 24 hours | Take pain relief as recommended by your dentist or pharmacist. Anti-inflammatories such as ibuprofen, and paracetamol, are commonly suggested. Follow the directions on the packet and never exceed the recommended dose. |
| Eating | Stick to softer foods and chew on the other side of your mouth until the treated tooth feels settled. |
| Days 2 to 3 | Tenderness should ease a little each day. Keep up gentle brushing and flossing around the tooth. |
If your dentist suggests alternating two types of pain relief, follow their exact instructions and check with your pharmacist if anything is unclear, especially if you take other medications or have a health condition.
Simple troubleshooting
- Throbbing when you lie down? Prop your head up with an extra pillow to reduce pressure to the area.
- Mild swelling? A cold pack on the cheek, around 15 minutes on then 15 minutes off, can help in the first day.
How to know you are healing well. The reassuring signs are simple: the discomfort eases a little each day rather than building, and any swelling settles down over the first few days. If things are heading in the right direction, you are on track.
Do people regret having a root canal?
Quick answer: Most people are relieved rather than regretful. A root canal ends the pain of an infected tooth and lets you keep your natural tooth, which is almost always preferable to losing it. The main cause of later regret is skipping the protective crown, which can leave the tooth at greater risk of fracturing.
Keeping your own tooth matters more than people often realise. A natural tooth holds its place in your bite, supports the teeth either side, and chews far more naturally than most replacements. That is why saving a tooth, when it can be saved, is usually the first choice.
If you are weighing it up, this short checklist can help you talk it through with your dentist:
- Is there enough healthy tooth structure left to restore?
- Am I able to follow through with the crown afterwards, if one is recommended?
- Am I comfortable with the simple recovery steps for the first few days?
When to call us. A root canal is designed to settle, so contact the practice promptly if you notice the return of hot or cold sensitivity in the treated tooth after it had calmed down, a small pimple-like spot on the gum near the tooth, or pain that is getting worse rather than better. These are signs the tooth should be checked, and the sooner the better.
We would be glad to welcome you to the practice
If a root canal has been recommended, or a sore tooth is keeping you up at night, you do not have to face it worrying about pain. Our team takes an unhurried, gentle approach and will talk you through every step before we begin. We complete root canal treatment here in our Kurmond rooms, with more complex cases referred to a specialist endodontist where appropriate.
The Kurmond Dentist is an ADA member practice serving Kurmond and the wider Hawkesbury, including North Richmond, Richmond, Windsor, Kurrajong and Pitt Town. We offer on-site HICAPS health fund claiming and flexible payment plans to help make treatment manageable. You can learn more about root canal treatment or get in touch to arrange a visit.
This article is general information only and is not a substitute for personalised dental or medical advice. Please speak with your dentist or another qualified health practitioner about your individual situation.
