Root canal pain

Is a root canal painless?

A root canal is meant to relieve pain, and the tooth is numbed, so it is usually no more painful than a filling, though you may feel pressure. Mild soreness for a few days afterwards is normal and usually improves within three to five days. Severe or throbbing pain, or pain that returns months or years later, needs a call to your dentist or endodontist.

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Is a root canal painless?

Mostly, yes. The AAE says modern root canal treatment relieves pain rather than causing it, that local anesthesia numbs the tooth and surrounding area, and that you may feel pressure or movement but not sharp pain. Cleveland Clinic says it is usually no more painful than getting a filling, and that you should let your provider know if anything hurts during the procedure. The pain people associate with root canals usually comes from the infection itself, according to the AAE.

What you may feel during the procedure

The tooth is numbed first. Cleveland Clinic says you may feel pressure during the procedure, and the AAE says sedation options vary by office. If you feel pain, tell the dentist, who can add more anesthetic. The sources we read do not use a 1 to 10 pain scale, so we cannot say how bad it feels on one, and experience varies.

Pain after a root canal: what is normal

The AAE says mild soreness or tenderness for a few days is normal, sensitivity when biting is common during healing, and symptoms usually improve within three to five days. Cleveland Clinic says most people recover in under a week and that mild lingering sensitivity is normal. The AAE's post-treatment guidance expects tenderness and mild jaw soreness for a few days, and says a slightly different sensation in the tooth may last for some time.

How to stop throbbing pain after a root canal

Throbbing is not what the sources describe as normal. Cleveland Clinic says throbbing pain after treatment warrants a call to your provider, since infected pulp may remain. For ordinary soreness, the AAE says over-the-counter medications such as ibuprofen or acetaminophen often help and a cold compress on the outside of the cheek can reduce swelling, and the AAE's post-care page says your endodontist may prescribe stronger medication, which you should take exactly as directed. Avoid chewing on the tooth until it is permanently restored.

Why a root canal tooth can hurt months or years later

The AAE says reinfection can occur months or years after treatment because of a cracked filling, a delayed crown, new decay or trauma, and that retreatment or endodontic surgery can often save the tooth. Cleveland Clinic says root canals may fail if damage is too severe and lists signs of infection: a gum pimple or boil, facial or jaw swelling, a darkened tooth, a loose tooth, pain spreading to the jaw or nearby teeth, and pain when chewing or touching the tooth, and says these infections will not heal on their own.

If your treated tooth hurts again, do not wait. A dentist can examine it, take an X-ray and tell you whether it needs retreatment, a new crown or something else.

If you still have pain with a temporary filling

The AAE says losing a thin layer of temporary filling is normal, but to contact your endodontist if the temporary crown or filling comes out, if your bite feels uneven, or if pre-treatment symptoms return. Our guides on eating after a root canal and on root canal timing explain what to expect.

Is a root canal worth it?

Saving a natural tooth is the goal. ADA MouthHealthy says a root canal saves a severely damaged or infected tooth instead of removing it, and that with proper care your restored tooth can last a lifetime. Cleveland Clinic says if a root canal fails, the tooth may be re-treated or removed and replaced with an implant or a bridge.

Frequently asked questions

Is a root canal painless?

The tooth is numbed and the treatment relieves pain from infection. You may feel pressure but not sharp pain, according to the AAE.

How long is the pain after a root canal?

Mild soreness usually improves within three to five days. Pain lasting longer, or severe pain, needs a call.

How to stop throbbing pain after a root canal?

Call your dentist: Cleveland Clinic says throbbing pain warrants a call because infected pulp may remain. For ordinary soreness, over-the-counter pain relief and a cold compress can help.

Why is my root canal tooth hurting after years?

Reinfection can happen from a cracked filling, delayed crown, new decay or trauma. See your dentist or endodontist for an exam and X-ray.

Is a root canal more painful than a filling?

Cleveland Clinic says it is usually no more painful than a filling.

Do I need antibiotics after a root canal?

Only if your dentist prescribes them, for example if infection has spread. Take any prescribed medicine exactly as directed.

Sources

General education only. Where sources give different timings, this guide shows the range and tells you to follow your own clinician.

This guide provides general information only and is not a substitute for professional medical or dental advice. If you have a concern about your health, please consult your nearest doctor or dentist.