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Do I Need a Root Canal? Signs, Symptoms, and When to See an Endodontist

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Our Team

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7/10/2026

Is severe tooth pain or tooth sensitivity keeping you up at night? If so, you may be concerned about whether you need a root canal. If the pulp inside a tooth becomes inflamed or infected from deep decay, a crack, or an injury, a root canal may be the only way to save it. Knowing the warning signs can help you get treatment before the infection spreads. 

 At Cornerstone Endodontics in Birmingham, AL, our team diagnoses and treats these problems every day. Call today to schedule an evaluation and get answers about your symptoms. 

What is a root canal? 

So, what is a root canal? It's a treatment that removes infected or damaged tissue from inside a tooth. Every tooth contains soft tissue called pulp, made up of nerves and blood vessels. When bacteria reach the pulp through a deep cavity, crack, or injury, the tissue becomes inflamed or infected, causing the pain most people associate with needing this procedure. 

During root canal therapy, the endodontist removes the diseased pulp, cleans and disinfects the inner chambers of the tooth, and seals the space to prevent reinfection. Despite its reputation, the procedure relieves pain rather than causing it. Modern techniques and anesthesia make treatment feel similar to getting a routine filling. 

Signs that you need root canal therapy in Birmingham 

A tooth infection doesn't look the same in every patient, but certain symptoms are strong indicators that the pulp is in trouble:   

  • Persistent or throbbing pain: Discomfort that lingers for days, wakes you up at night, or intensifies when you bite down often signals deep infection,  
  • Lingering tooth sensitivity: Pain from hot or cold that lasts long after the source is gone suggests nerve damage.  
  • Swollen gums near one tooth: Localized swelling, tenderness, or a small pimple-like bump on the gums can indicate that infection is draining from the tooth's root.  
  • Darkening of the tooth: A tooth that turns gray or dark compared to its neighbors may have dying pulp inside. 

Some infected teeth cause no symptoms and are only detected on x-rays, which is another reason to keep up with regular dental visits. If any of these signs sound familiar, don't wait. An untreated tooth infection or swollen gums can spread to the jaw and beyond. 

How root canal therapy works  

Root canal therapy at our Birmingham, AL office typically takes one to two visits. First, our team numbs the area thoroughly and places a protective barrier around the tooth. A small opening is made in the top of the tooth, and the infected pulp is removed with precise instruments. The canals are then cleaned, shaped, disinfected, and filled with a biocompatible material before the opening is sealed. 

Most patients return to normal activities the same day, with mild soreness that fades within a few days. In many cases, your general dentist will place a crown afterward to protect the tooth long term. With proper care, a treated tooth can last a lifetime. 

Don't wait on pain 

Ignoring the warning signs of a tooth infection rarely makes them go away. Unfortunately, swollen gums, deep aches, and tooth sensitivity tend to get worse without treatment. If you have questions such as, "What is a root canal?" or want an expert opinion on your symptoms, our team at Cornerstone Endodontics is here to help. Schedule an evaluation in Birmingham, AL today, and we'll help put an end to the pain.

I would like to thank the Dr. Collier , the two dental assistants, Leslie + Megan and the receptionist Veronica for their kindness, care, and professionalism. From the moment I arrived, I felt very welcomed, comfortable, and at ease throughout my entire appointment. Everyone was very attentive, kind, and caring. It was a very positive experience, and I truly appreciate the excellent treatment I received. Thank you so much.

V.T. Google

First time getting a root canal. It was completely pain free. I hope I don’t need another but if I ever do I’m coming here!

D.K. Google

I was having excruciating pain after the permanent crown was put on my tooth. Went to ER because of the pain that night. Called my dentist the next day and they got me in to Cornerstone for a root canal. That was the best Endodontics office ever!! Saran and Catherine never left me alone. I was offered a blanket, a drink, options for TV. I had relaxing music and pics. My doctor did a very thorough job, and I never had pain, even with the numbing shots. He was great! The entire staff were friendly, and could not have done Anything better. Highly recommend this group to anyone looking for an Endodontics team. I will be back there if I ever need another root canal!! No pain when I left the office. Thank you all for being the best group ever!!! Geneva Boyd. 09/25/26

G.B. Google

I had a great experience, the staff was super polite and Sarah was awesome. Even though nobody likes having a root canal, they made it not so bad lol

J.B. Google

Amazing

J.W. Google

1257

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