What Is a Root Canal?
A root canal is a dental procedure used to remove infected or damaged tissue from inside a tooth, clean and seal the inner canals, and save the tooth from extraction. It is one of the most commonly performed dental treatments and, when completed by a licensed dentist, is far more comfortable than most patients expect. Understanding what the procedure involves can help ease any anxiety you may have before your appointment.
Why Would You Need a Root Canal?
At the centre of every tooth is a soft tissue called the pulp, which contains nerves, blood vessels, and connective tissue. When this pulp becomes infected or inflamed — due to deep decay, a cracked tooth, repeated dental procedures, or trauma — bacteria can spread through the root canals and cause serious damage to the surrounding bone and tissue.
Without treatment, the infection can worsen and may eventually require the tooth to be extracted. A root canal removes the source of infection, allowing you to keep your natural tooth intact.
Common causes of pulp damage include:
- Severe tooth decay reaching the inner pulp
- A cracked, chipped, or broken tooth
- Repeated dental procedures on the same tooth
- Tooth injury or trauma, even without visible cracking
- A deep root cavity left untreated over time
Signs You May Need a Root Canal
Not all infected teeth cause obvious symptoms, which is why regular dental check-ups matter. However, the following signs often indicate that the tooth pulp is damaged and treatment may be needed:
- Persistent or severe toothache, especially when biting or applying pressure
- Prolonged sensitivity to hot or cold that lingers after the temperature source is removed
- Recurring pain in the tooth or surrounding gum tissue
- A large, visible cavity that has progressed deep into the tooth
- Swollen, tender, or darkened gums near the affected tooth
- Pus draining into the mouth or a pimple-like bump on the gum
- Foul taste or odour that persists near a specific tooth
- A darkened or discoloured tooth compared to surrounding teeth
If you are experiencing any of these symptoms in the Calgary NW area, it is important to seek care promptly. Delaying treatment can allow the infection to spread. Our team at Expressions Dental offers emergency dental care for patients dealing with sudden or severe tooth pain.
The Root Canal Procedure: Step by Step
Root canal treatment typically takes one to three visits, depending on the complexity of the tooth and the extent of the infection. Here is what you can expect at each stage:
Step 1: Diagnosis and Preparation
Before treatment begins, your dentist will take digital X-rays to assess the shape of the root canals and determine the extent of the infection. A local anaesthetic is administered to ensure the area is completely numb, so you remain comfortable throughout the procedure.
Step 2: Cleaning the Root Canal
Once the area is numb, your dentist creates a small opening in the top surface of the tooth. Using specialised fine instruments, the infected and dead pulp tissue is carefully removed from inside the canals. This step eliminates the source of pain and infection.
Step 3: Shaping and Disinfecting
The empty canals are then cleaned, shaped, and disinfected using small files and antibacterial irrigation solutions. This prepares the canals to receive a filling material and ensures that no bacteria remain that could cause a future infection.
Step 4: Filling the Canal
The cleaned canals are filled with a biocompatible, rubber-like material called gutta-percha, which is sealed in place with dental adhesive cement. This permanently closes off the canals to prevent recontamination.
Step 5: Restoring the Tooth
Because a tooth that has undergone root canal treatment can become more brittle over time, a dental crown is usually recommended to protect and restore full function to the tooth. Your dentist will discuss the best restoration option for your specific situation.
Is a Root Canal Painful?
This is one of the most common concerns patients raise, and the reassuring answer is: no, not during the procedure. Modern anaesthesia means that most patients feel little to no discomfort while the treatment is being carried out. In fact, the procedure relieves the pain caused by the infection rather than creating it.
Some mild soreness or sensitivity in the days following treatment is normal and can usually be managed with over-the-counter pain relief. Your dentist will provide clear aftercare instructions.
If dental anxiety is a concern for you, Expressions Dental in Calgary NW offers sedation options including nitrous sedation to help you feel relaxed and comfortable throughout your visit.
What Happens If You Avoid a Root Canal?
Leaving an infected tooth untreated is not a safe option. The infection will not resolve on its own and can spread to the surrounding bone, neighbouring teeth, and in serious cases, to other parts of the body. The tooth may eventually need to be removed entirely.
If a tooth is lost, replacement options such as dental implants are available, but preserving your natural tooth through root canal treatment is always the preferred outcome wherever possible.
Root Canal Treatment at Expressions Dental, Calgary NW
At Expressions Dental, our licensed dental team provides thorough, patient-centred root canal treatment in Calgary NW using modern techniques and equipment designed to make your experience as smooth and comfortable as possible. We take the time to explain each step, answer your questions, and ensure you feel confident before treatment begins.
If you are experiencing tooth pain or have been told you may need a root canal, do not wait. Contact Expressions Dental in Calgary today to book a consultation or request an emergency dental appointment. We are here to help you protect your smile and your long-term oral health.
Frequently Asked Questions
What is a root canal and what does it involve?
A root canal is a dental procedure that removes infected or damaged pulp tissue from inside a tooth, cleans and disinfects the inner canals, and seals them to prevent reinfection. It is designed to save a tooth that would otherwise need to be extracted. The procedure is carried out under local anaesthetic and is typically completed in one to three visits.
How do I know if I need a root canal?
Common signs include a persistent or throbbing toothache, prolonged sensitivity to hot or cold, swollen or tender gums near a tooth, a visible large cavity, or a foul taste near a specific tooth. However, some infected teeth show no obvious symptoms, which is why regular dental check-ups are important. If you are experiencing pain in Calgary NW, it is best to have the tooth assessed promptly.
Does a root canal hurt?
The procedure itself is not painful because it is performed under local anaesthetic. Most patients are surprised by how comfortable the experience is. You may feel some mild soreness for a few days afterwards, which is normal and can be managed with over-the-counter pain relief.
How long does a root canal take?
Most root canal treatments are completed in one to two appointments, each lasting approximately 60 to 90 minutes. The number of visits needed depends on the tooth's location, the complexity of the root canal system, and the severity of the infection.
Do I need a crown after a root canal?
In most cases, yes. A tooth that has had root canal treatment is more susceptible to fracture because it no longer has a living pulp providing nourishment. A dental crown is usually placed over the tooth to protect it, restore its shape, and allow normal chewing function. Your dentist will advise you on the most appropriate restoration for your tooth.
What happens if I do not get a root canal when I need one?
If left untreated, an infected tooth will not heal on its own. The infection can spread to surrounding bone and teeth, cause a dental abscess, and in serious cases affect your overall health. The tooth may eventually be lost entirely. Seeking treatment early gives you the best chance of saving the tooth and avoiding more complex treatment.
Can I eat normally after a root canal?
You should avoid eating on the treated side of your mouth until the tooth has been fully restored with a permanent filling or crown. Once restored, you can return to eating normally. Your dentist will give you specific aftercare instructions following your procedure.