Infected Tooth? Here’s How Root Canal Treatment Can Help

August 25, 2026by Shakeeb Muhammad

At Meadowvale Town Dentist: Mississauga, patients can receive personalized dental care for tooth infections and other dental concerns. If you are searching for root canal treatment in Mississauga, understanding the signs, causes, treatment process, and benefits can help you make an informed decision about your oral health.

What Is a Tooth Infection?

A tooth infection, also known as a dental infection, can develop when harmful bacteria enter the inner portion of a tooth. The outer layers of the tooth normally protect the pulp, which contains nerves and blood vessels. However, deep decay, cracks, trauma, or other damage can allow bacteria to reach this sensitive area.

When the pulp becomes infected or inflamed, the condition may cause significant discomfort. Without appropriate treatment, the infection can spread beyond the tooth and affect surrounding tissues.

Some common causes of tooth infection include:

  • Deep tooth decay
  • Cracked or fractured teeth
  • Dental trauma
  • Repeated dental procedures
  • Untreated cavities
  • Damage to an existing filling or restoration

Early dental treatment can help prevent a minor dental problem from becoming more complicated.

Signs You May Need Root Canal Treatment

Not every toothache means you need a root canal. However, certain symptoms may indicate that the pulp inside your tooth has become infected or seriously inflamed.

Persistent Tooth Pain

Pain that continues for an extended period or returns frequently can be a warning sign. You may notice discomfort while resting, eating, or applying pressure to the affected tooth.

Sensitivity to Hot and Cold

Temporary sensitivity can sometimes occur with minor dental problems. However, intense or lingering sensitivity after consuming hot or cold foods and drinks may indicate a deeper problem involving the tooth pulp.

Pain When Chewing

If biting or chewing causes sharp or persistent pain, the tooth may have inflammation, infection, or structural damage that requires a dental examination.

Swollen or Tender Gums

An infected tooth can affect the surrounding gum tissue. Swelling, tenderness, or a small bump near the tooth may be signs that an infection is present.

Darkening or Discoloration

A tooth that becomes darker than the surrounding teeth may have experienced damage to its internal tissues. Your dentist can determine the cause and recommend appropriate treatment.

Bad Taste or Drainage

An unpleasant taste in your mouth or drainage around a tooth may occur when an infection creates an opening through the gum. This should be evaluated by a dentist promptly.

How Does Root Canal Treatment Help an Infected Tooth?

A root canal is a dental procedure designed to treat infection or inflammation inside a tooth. Instead of removing the entire tooth, the procedure focuses on removing the damaged or infected pulp while preserving the remaining tooth structure.

During root canal treatment, the dentist carefully cleans and disinfects the inside of the tooth. The space is then filled and sealed to help prevent bacteria from entering again.

Depending on the condition of the tooth, a dental crown may be recommended after treatment. A crown can help protect a weakened tooth and restore its function.

What Happens During Root Canal Treatment?

Understanding the process can make the idea of treatment feel less overwhelming. While every case is different, root canal treatment generally involves several important steps.

1. Dental Examination

Your dentist first examines the affected tooth and reviews your symptoms. Dental X-rays may be used to evaluate the tooth roots and surrounding bone and determine the extent of the problem.

2. Local Anesthesia

The affected area is numbed using local anesthesia. This helps make the procedure more comfortable while the dentist works on the tooth.

3. Removing the Infected Pulp

The dentist creates a small opening in the tooth and carefully removes the infected or damaged pulp from inside the tooth.

4. Cleaning and Disinfecting

The root canals are thoroughly cleaned and shaped. This step helps remove bacteria and infected material from the internal spaces of the tooth.

5. Sealing the Tooth

After cleaning, the canals are filled with a specialized material and sealed to help prevent further bacterial contamination.

6. Restoring the Tooth

Depending on the amount of tooth structure remaining, a filling or dental crown may be recommended. A crown can provide additional protection and help restore the tooth’s strength and appearance.

Why Save an Infected Tooth With a Root Canal?

When possible, preserving your natural tooth can offer several benefits. Root canal treatment allows the dentist to address the infection without removing the entire tooth.

Preserves Your Natural Tooth

Keeping your natural tooth can help maintain your normal bite and chewing function.

Helps Stop Dental Infection

By removing infected pulp and cleaning the root canals, treatment addresses the source of infection inside the tooth.

Restores Function

Once the tooth has been properly restored, you can generally use it for normal chewing.

Supports Your Natural Smile

Preserving the original tooth can help maintain the appearance of your smile, particularly when the affected tooth is visible.

May Prevent More Complicated Dental Work

Losing a tooth can eventually create gaps that may affect surrounding teeth. Replacing a missing tooth may require treatments such as a dental bridge or implant. Saving the natural tooth when appropriate may help avoid these additional steps.

Root Canal vs. Tooth Extraction

Patients sometimes wonder whether an infected tooth should be treated with a root canal or removed completely.

A root canal treatment is intended to preserve the natural tooth by removing the infected pulp and sealing the tooth. An extraction, on the other hand, removes the entire tooth.

The best option depends on factors such as the severity of infection, the amount of remaining tooth structure, the condition of the roots, and the overall health of the tooth.

If the tooth can be successfully restored, your dentist may recommend root canal treatment as an option for preserving it. If the tooth is severely damaged and cannot be restored, extraction may be considered.

A dental examination is necessary to determine which approach is appropriate for your situation.

What Happens If an Infected Tooth Is Left Untreated?

Ignoring an infected tooth may allow the condition to progress. Dental infections do not always disappear on their own, even if the pain temporarily improves.

An untreated infection can potentially spread to the tissues surrounding the tooth and lead to an abscess. In more advanced situations, additional treatment may be required.

If you have persistent tooth pain, swelling, fever, facial swelling, or difficulty swallowing, seek urgent dental care. Severe symptoms can require prompt attention.

Root Canal Treatment in Mississauga

If you are experiencing symptoms of an infected tooth, getting a professional evaluation can help identify the cause and determine the right treatment. At Meadowvale Town Dentist: Mississauga, dental care is tailored to each patient’s needs.

Patients in Mississauga, Ontario, Canada can receive dental assessments and treatment recommendations based on their individual oral health concerns. Whether you have persistent tooth pain, sensitivity, swelling, or discomfort when chewing, discussing your symptoms with a dental professional is an important step.

Frequently Asked Questions

1. How do I know if I need a root canal?

Persistent tooth pain, lingering sensitivity to hot or cold, pain when chewing, swelling, gum tenderness, or tooth discoloration may indicate a problem with the pulp. A dental examination and X-rays can help determine whether root canal treatment is necessary.

2. Is root canal treatment painful?

Modern root canal treatment is performed with local anesthesia to numb the affected area. Your dentist will take steps to keep you comfortable during the procedure. Some tenderness may occur afterward, but it can usually be managed with appropriate aftercare.

3. Can an infected tooth heal without a root canal?

An infected pulp generally cannot heal on its own once bacteria have reached the inner tooth. Depending on the condition of the tooth, treatment may involve root canal therapy or extraction. Your dentist can determine the appropriate option after an examination.

4. How long does a root canal take?

The time required depends on the tooth, the complexity of the root canals, and the severity of the infection. Some treatments can be completed in one appointment, while more complex cases may require additional visits.

5. Do I need a crown after a root canal?

A dental crown is often recommended when a tooth has lost significant structure or needs additional protection after root canal treatment. Whether you need a crown depends on the location and condition of the treated tooth.

Final Thought

An infected tooth should not be ignored, especially when symptoms such as persistent pain, swelling, sensitivity, or discomfort while chewing are present. Root canal treatment can help remove infection while preserving the natural tooth when the tooth is suitable for restoration.

Meadowvale Town Dental Centre Dr. Arthur Majchrowicz
Where Every Smile Matters: Experience Excellence in Dental Care at Meadowvale Town Centre Dental
Hours
Monday-Friday: 10am-8pm
Saturday: 8am-2pm
Sunday: Closed
 
Address
6677 Meadowvale Town Centre
Circle Unit 51, Mississauga, ON L5N 2R5, CA
905-826-4040

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