
The Complete Guide to Root Canal Therapy: What to Expect During Your Treatment
Root canal therapy is one of the most common dental procedures performed today, yet it remains surrounded by misconceptions and unnecessary anxiety. Understanding what this procedure entails can help alleviate fears and prepare you for a more comfortable experience.
At its core, root canal therapy is a tooth-saving procedure designed to eliminate infection and prevent future bacterial invasion. When the soft tissue inside your tooth becomes infected or inflamed, a root canal offers a way to remove the damaged tissue while preserving your natural tooth structure. This guide will walk you through everything you need to know about this vital dental treatment.
What Is Root Canal Therapy and Why Might You Need It?

Root canal therapy (also called endodontic treatment) addresses problems within the tooth’s pulp, the soft tissue containing nerves, blood vessels, and connective tissue. This pulp chamber extends from the crown of your tooth down through canals in the roots that connect to the surrounding tissues of your jawbone.
When bacteria enter this pulp area through deep decay, cracks, or trauma to the tooth, they can cause infection or inflammation that leads to pain and, eventually, abscess if left untreated. Severe infections can even spread to other parts of your body, creating serious health concerns.
You might need a root canal if you experience:
Persistent tooth pain Particularly pain that worsens when applying pressure or eating hot/cold foods
Prolonged sensitivity Lingering pain to temperature changes that doesn’t quickly subside
Tooth discoloration Darkening of the tooth can indicate pulp damage or death
Swollen, tender gums Inflammation near the affected tooth
Dental abscess A pimple-like bump on the gums, sometimes accompanied by bad taste or odor
Facial or jaw swelling In severe cases, infection can spread to surrounding tissues
Mobility The tooth may feel loose due to ongoing infection affecting surrounding bone
The Root Canal Procedure: Step-by-Step
Modern root canal therapy is far more comfortable than its reputation suggests. With proper anesthesia and contemporary techniques, most patients report that having a root canal feels similar to receiving a routine filling. Here’s what happens during the procedure:
1. Diagnosis and Preparation
Your dentist will begin with a comprehensive examination, including X-rays to assess the extent of infection and the shape of your root canals. Once root canal therapy is determined necessary, local anesthesia will be administered to ensure you remain comfortable throughout the procedure. A dental dam (a small protective sheet) is placed over the area to keep the tooth clean and free of saliva during treatment.
2. Accessing the Pulp
After you’re completely numb, the dentist creates a small opening in the crown of your tooth to access the pulp chamber and root canals. For front teeth, this access is made on the back side; for molars, the opening is made on the chewing surface.
3. Cleaning and Shaping the Canals
Using specialized instruments, your dentist removes the infected or inflamed pulp tissue. The canals are then carefully cleaned, disinfected, and shaped to prepare them for filling material. This step is crucial for removing all bacteria and preventing reinfection.
4. Filling the Canals
Once cleaned, the canals are filled with a biocompatible material called gutta-percha, which is a rubber-like substance that seals the space to prevent future infection. Adhesive cement is used to ensure complete sealing of the canals.
5. Temporary or Permanent Restoration
After the canals are sealed, a temporary filling is placed to close the access opening. In many cases, you’ll need to return for a permanent restoration, typically a crown to protect the tooth long-term and restore full functionality.

Recovery and Aftercare
Most patients return to normal activities the day after a root canal procedure. You might experience some tenderness in the area for a few days, especially when chewing or applying pressure. This discomfort is typically manageable with over-the-counter pain medications and gradually subsides.
Some temporary sensitivity is normal, but persistent or severe pain could indicate a complication that requires follow-up. Contact your specialist if you experience:
- Severe pain or pressure lasting more than a few days
- Visible swelling inside or outside your mouth
- Return of original symptoms
- An allergic reaction to medication (rash, hives, or itching)
- Your temporary filling or crown comes out
Until your permanent restoration is placed, you should:
- Avoid chewing with the treated tooth to prevent fracturing
- Continue practicing good oral hygiene
- Take medications as prescribed
- Follow any specific instructions provided by your dentist
Long-Term Success and Tooth Preservation
With proper care, a tooth treated with root canal therapy can last a lifetime. Success rates for the procedure are approximately 95%, making it one of the most reliable dental treatments available.
To ensure the longest life for your treated tooth:
- Practice excellent oral hygiene – Brush twice daily, floss daily, and use antimicrobial mouthwash
- Schedule regular dental checkups – Allow your dentist to monitor the treated tooth and your overall oral health
- Protect your tooth – Consider a nightguard if you grind your teeth
- Avoid biting hard foods – Particularly with front teeth that have undergone root canal therapy
- Address problems promptly – If the restoration (filling or crown) breaks or falls out, contact your dentist immediately.
Remember that a tooth lacking pulp receives nourishment from surrounding tissues, so it can remain functional indefinitely with proper care.
Myths vs. Facts About Root Canal Therapy
Several misconceptions about root canal therapy persist despite modern advances in dental care:
Myth: Root canals cause illness. Fact: There is no scientific evidence linking properly performed root canal therapy to disease elsewhere in the body.
Myth: Root canals are extremely painful. Fact: Modern techniques and effective anesthesia make the procedure comparable to receiving a filling.
Myth: Extraction is better than root canal therapy. Fact: Preserving your natural tooth is almost always preferable for your oral health and function.
Myth: Root canals require multiple lengthy appointments. Fact: Most root canals can be completed in one or two appointments of about 90 minutes each.
Myth: Results don’t last. Fact: With proper restoration and care, a root canal-treated tooth can last a lifetime.
Schedule Your Consultation at Southwest Endodontics
If you’re experiencing tooth pain or have been told you need a root canal, the experienced team at Southwest Endodontics can help. Our gentle approach and modern techniques ensure your comfort throughout the procedure while effectively saving your natural tooth.
During your consultation, we’ll conduct a thorough examination, explain your treatment options, and answer any questions you may have about root canal therapy. We understand dental procedures can cause anxiety, and we’re committed to making your experience as comfortable as possible.
Don’t let fear of root canal therapy prevent you from addressing dental pain or infection.
Contact Southwest Endodontics today by completing our online form to schedule your consultation. Our compassionate team is ready to help restore your dental health and preserve your natural smile for years to come.