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Does a Root Canal Hurt?
If you’ve been told you need a root canal, you might be wondering whether the procedure is likely to hurt.
The short answer is that no, a root canal does not hurt. The procedure is performed under local anaesthetic, which numbs the tooth and its surrounding area so that you don’t feel any pain. However, it’s normal to feel some discomfort in the days following the procedure while the tooth heals.
What pain should I expect during and after a root canal?
Lots of people feel nervous before a root canal, but the procedure is usually completely painless. Here’s what you should expect:
During the procedure: Local anaesthetic and pain control
Before starting the root canal, your dentist will numb the area using a local anaesthetic. This means you won’t feel any pain during the procedure itself.
You may notice:
- A feeling of pressure while the dentist works on the tooth
- Some vibrations from dental instruments
- Mild discomfort if the tooth was very sensitive beforehand
However, sharp pain during the procedure is not expected. If you do feel any pain, you should let your dentist know straight away so they can adjust the anaesthetic.
After the procedure: Normal soreness and recovery timelines
It’s completely normal to experience some soreness once the anaesthetic wears off. This usually feels like a dull ache or tenderness around the treated tooth.
Normal symptoms include:
- Mild discomfort for a few days
- Sensitivity when biting or chewing
- Slight swelling in the surrounding gums
The discomfort should gradually improve within a few days to a week. Over-the-counter pain relief, such as ibuprofen or paracetamol, is often enough to manage the symptoms.
If your pain is improving day by day, this is usually a sign that the tooth is healing as expected.
Normal post-treatment discomfort vs potential issue
To help you quickly identify whether your post-procedure pain falls within normal recovery expectations or indicates something could be wrong, refer to the table below:
| Symptom / feature | Expected recovery soreness | When you should seek help |
|---|---|---|
| Pain intensity | Mild to moderate dull ache; easily controlled with over-the-counter pain medication. | Severe, throbbing, or unbearable pain that does not respond to painkillers. |
| Duration & trend | Peaks within 48 hours; steadily improves and resolves within 3 to 7 days. | Persists or escalates beyond 7 to 10 days, or begins suddenly weeks after treatment. |
| Nerve sensations | Mild tenderness in the immediate gum area when chewing. | Persistent numbness, tingling, or “electric shock” feelings in the lip, chin, or tongue. |
| Physical signs | Slight, localised gum swelling that subsides within days. | Rapidly expanding facial swelling, high fever, or visible pus discharge around the tooth. |
What should I do if I’m in lots of pain after a root canal?
While some discomfort is normal, severe or worsening pain is not.
You should contact your dentist as soon as possible if you experience:
- Pain that gets worse instead of better
- Severe throbbing or sharp pain
- Swelling in your face and jaw
- Pus or discharge around the tooth
- A fever or feeling unwell
These symptoms could indicate that the infection hasn’t fully cleared or that there is another complication.
Your dentist will usually examine the tooth, ask about your symptoms, and take X-rays if needed. Depending on what they find, further treatment may be required. This could involve additional cleaning of the root canals, antibiotics, or in some cases, a repeat procedure.
It’s important to get help early to prevent the problem from becoming more serious.
Is pain after a root canal a sign of dental negligence?
Not necessarily. Root canal treatment can be complex, and sometimes complications can occur even when the procedure has been carried out correctly.
However, there are situations where pain after a root canal may be linked to substandard care. These include:
- Failing to identify all canals in the tooth
- Incomplete cleaning of the infection
- Poor sealing of the tooth after treatment
- Not recognising or addressing complications
If you believe the treatment you received fell below an acceptable standard and this led to avoidable pain or further problems, it could be considered dental negligence.
If you’re concerned about pain after a root canal and think something may have gone wrong, get in touch with the Dental Law Partnership today to find out how we can help.
Related guides
Getting a root canal can be a nerve-wracking experience, but there’s no need to worry. Have a read of our other root canal guides to help you feel prepared before the treatment and to know what to expect after the treatment: