What Is a Root Canal and Why Might You Need One?
When patients hear the words “root canal,” I often see a look of concern—or even fear—cross their faces. That reaction is completely understandable. Root canals have a reputation that isn’t deserved. In reality, a root canal is a very common, highly effective procedure designed to relieve pain, stop infection, and save your natural tooth.
Let me walk you through what a root canal actually is, why it’s sometimes necessary, and what you can expect if you ever need one.
What Is a Root Canal?
A root canal is a dental procedure used to treat infection or inflammation inside a tooth. Each tooth has a soft inner tissue called the pulp, which contains nerves, blood vessels, and connective tissue. The pulp runs from the crown of the tooth down through the roots (or “canals”) into the jawbone.
When this pulp becomes infected or severely inflamed, it can cause pain, swelling, and—if left untreated—serious complications. A root canal removes the damaged pulp, cleans and disinfects the inside of the tooth, and then seals it to prevent future infection.
During a root canal cleans and disinfects the inside of a tooth to restore health and function.
Why Would Someone Need a Root Canal?
The most common reason is pain. If your tooth hurts even when you’re not doing anything to it, the nerve inside your tooth is likely damaged. There are several reasons the nerve inside a tooth can become damaged. The most common include:
- Deep Tooth Decay
When a cavity is left untreated, bacteria can travel deeper into the tooth and reach the nerves. At that point, a simple filling is no longer enough, and a root canal may be the best way to save the tooth. - Cracked or Chipped Teeth
Even small cracks can allow bacteria to enter the tooth. Sometimes this happens after biting down on something hard or from an old filling weakening the tooth structure. - Repeated Dental Procedures
Multiple restorations on the same tooth over time can irritate the pulp and lead to inflammation or infection. - Trauma to the Tooth
An injury—such as a fall or sports accident—can damage the pulp even if the tooth doesn’t visibly crack. In some cases, symptoms may appear months or even years later.
Common Signs You Might Need a Root Canal
Not every infected tooth causes immediate pain, but some common warning signs include:
- Persistent toothache or pressure
- Sensitivity to hot or cold that lingers
- Pain when chewing or biting
- Swollen or tender gums
- A small pimple-like bump on the gums
- Darkening or discoloration of a tooth
If you experience any of these symptoms, it’s important to have the tooth evaluated. Early treatment often means a simpler procedure and better long-term outcomes.
What Happens During a Root Canal?
Patients usually say root canals are far more comfortable than expected.
After numbing the area, I create a small opening in the tooth to access the pulp. The infected tissue is removed, and the canals are thoroughly cleaned and disinfected. Once the tooth is sealed, it’s typically restored with a crown to protect it and restore full function.
Most patients tell me the procedure feels similar to getting a filling—and many are surprised by how relieved they feel afterward.
Why Saving the Natural Tooth Matters
Whenever possible, preserving your natural tooth is the best option. A successful root canal allows you to:
- Maintain normal chewing and biting
- Prevent surrounding teeth from shifting
- Avoid more complex procedures like extractions and implants
- Keep your natural smile intact
Modern root canal treatment has a very high success rate and can help your tooth last a lifetime with proper care.
Final Thoughts from Dr. Pham
I always tell my patients this: root canals don’t cause pain—they relieve it. The discomfort people associate with root canals usually comes from the infection itself, not the treatment.
If you’re experiencing tooth pain or have been told you may need a root canal, don’t panic. Ask questions, get the facts, and know that the goal is always your comfort, health, and long-term dental well-being.
Your smile is worth saving. Sometimes, a root canal is how we do that.
From Dr. Winna Pham DDS, a dentist in the Spring Valley / Chinatown area of Las Vegas, Nevada
OPENING HOURS
| Weekdays | 8am – 5pm |
| Friday | Appointment |
| Sat-Sun | Closed |
