Why Do I Still Have Pain After a Root Canal?

root canal treatment in calgary

A root canal in SW Calgary is done to stop tooth pain and save a damaged tooth. Many people feel better soon after the treatment. But sometimes, pain can still be there for a few days or even longer. This can feel confusing and worrying. This blog explains why pain may happen after a root canal, how long it may last, and what to do if the tooth still hurts.

What Happens During a Root Canal?

A root canal is a dental procedure used to treat infection inside the tooth. The dentist in SW Calgary removes the infected pulp, cleans the root canals, and seals the tooth to stop bacteria from coming back.

After the procedure, the area around the tooth may feel sore. This is normal because the tissue around the root may be inflamed.

How Long Should Pain Last After a Root Canal?

Many people ask, how long should pain last after root canal treatment?

Mild pain or discomfort usually lasts for 2 to 5 days. In some cases, it may last up to one week. The pain should slowly get better each day.

If the pain stays the same, gets worse, or lasts more than 7–10 days, it is important to visit a dentist.

Common Reasons for Pain After a Root Canal

Inflammation Around the Tooth

After the root canal, the tissue around the root tip may be inflamed. This can cause pain when biting or touching the tooth.

This is one of the most common reasons for discomfort and usually heals with time.

Tooth Sensitivity After Root Canal

Some patients feel tooth sensitivity after root canal treatment. The tooth may feel sensitive when chewing or when pressure is applied.

This happens because the surrounding nerves are still healing.

Infection Not Fully Cleared

In some cases, bacteria may remain inside the tooth. This can happen if the root canals are very narrow or curved.

This may lead to ongoing pain or swelling.

High Filling or Crown

If the filling or crown placed after the root canal is slightly high, it can cause pressure when biting.

This pressure can lead to pain and discomfort. A simple adjustment by a dentist can fix this issue.

Cracked Tooth

A small crack in the tooth may not be easy to see. If the tooth is cracked, pain may continue even after the root canal.

Delayed Healing

Each person heals at a different speed. Some people may take more time for the area to heal fully.

What to Do If a Tooth Hurts After a Root Canal

If there is pain after treatment, here are simple steps to follow:

  • Take prescribed medicine as advised by the dentist
  • Avoid chewing on the treated side for a few days
  • Eat soft foods to reduce pressure on the tooth
  • Maintain good oral hygiene by brushing and flossing gently
  • Use a warm saltwater rinse to reduce swelling

If the pain does not improve, it is important to visit a dental clinic near you for a check-up.

When to Visit a Dentist

Pain after a root canal should not be ignored if:

  • Pain lasts more than 7–10 days
  • Swelling appears in the gums or face
  • There is a bad taste in the mouth
  • The tooth feels loose
  • Pain becomes sharp or severe

A dentist can examine the tooth using X-rays and check if further treatment is needed.

Can a Root Canal Fail?

Yes, in some cases, a root canal may fail. This can happen if the infection returns or if the tooth does not heal properly.

In such cases, the dentist may suggest:

  • Retreatment of the root canal
  • Apicoectomy (removal of the root tip)
  • Tooth extraction if the tooth cannot be saved

Early care can help avoid bigger problems.

How to Prevent Pain After Treatment

Following simple care steps can reduce the risk of pain:

  • Follow all instructions given by the dentist
  • Complete any recommended crown treatment
  • Avoid hard or sticky foods
  • Visit a dental clinic near you for follow-up visits

Good care helps the tooth heal faster and stay strong.

Final Thoughts

Pain after a root canal is not uncommon. In most cases, it is mild and goes away in a few days. Tooth sensitivity after root canal treatment can happen, but it usually improves with time.

Understanding how long pain should last after root canal treatment can help reduce worry. If the tooth still hurts or the pain increases, it is important to know what to do if the tooth hurts after a root canal.

A timely visit to a dentist can help find the cause and provide the right treatment. Early care keeps the tooth safe and supports better oral health.

Preserve Your Teeth With Root Canal Therapy at Heritage Park Dental.

We remove infected pulp, clean the root canal, and seal the tooth to stop further infection. Our goal is to reduce pain and save your natural tooth. We use modern tools and careful methods to keep the treatment safe and comfortable. Call us today to book your visit.

FAQ

Can a tooth get a new infection after a root canal?

It is rare, but it can happen if the tooth gets a new crack or if the filling leaks. This is why getting a permanent crown placed quickly is very important.

Does the pain mean the root canal failed?

Not necessarily. Most of the time, the pain is just pain from the surrounding tissues or inflammation. A dentist can take an X-ray to be sure the treatment is working.

Can I go back to school or work the next day?

Most people can return to their normal routine the very next day. You might feel a little tired or sore, but you should be able to function normally.

How do I know if the pain is an emergency?

If there is a fever, a bad taste in the mouth, or swelling that makes it hard to breathe or swallow, seek help immediately. These are signs of a more serious infection.

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