Root Canal Therapy Waterloo, Ontario
Root canal therapy is needed when the nerve of a tooth is affected by decay or infection. In order to save the tooth, the pulp (the living tissue inside the tooth), nerves, bacteria, and any decay are removed and the resulting space is filled with special, medicated, dental materials, which restore the tooth to its full function.
Having a root canal done on a tooth is the treatment of choice to save a tooth that otherwise would die and have to be removed. Many patients believe that removing a tooth that has problems is the solution, but what is not realized is that extracting (pulling) a tooth will ultimately be more costly and cause significant problems for adjacent teeth.
Signs and Symptoms for Possible Root Canal Therapy
- An abscess (or pimple) on the gums.
- Sensitivity to hot and cold.
- Severe toothache pain.
- Sometimes no symptoms are present.
- Swelling and/or tenderness.
Reasons for Root Canal Therapy
- Decay has reached the tooth pulp (the living tissue inside the tooth).
- Infection or abscess have developed inside the tooth or at the root tip.
- Injury or trauma to the tooth.
What Does Root Canal Therapy Involve?
A root canal procedure requires one or more appointments and can be performed by a dentist or by an endodontist.
While the tooth is numb, a rubber dam (a sheet of rubber) will be placed around the tooth to keep it dry and free of saliva. An access opening is made on top of the tooth and a series of root canal files are placed into the opening, one at a time, removing the pulp, nerve tissue, and bacteria. If tooth decay is present, it will also be removed with special dental instruments.
Once the tooth is thoroughly cleaned, it will be sealed with either a permanent filling or, if additional appointments are needed, a temporary filling will be placed.
At the next appointment, usually a week later, the roots and the inside cavity of the tooth will be filled and sealed with special dental materials. A filling will be placed to cover the opening on top of the tooth. In addition, all teeth that have root canal treatment should have a crown (cap) placed. This will protect the tooth and prevent it from breaking, and restore it to its full function.
After treatment, your tooth may still be sensitive, but this will subside as the inflammation diminishes and the tooth has healed.
You will be given care instructions after each appointment. Good oral hygiene practices and regular dental visits will aid in the life of your root canal treatment.
Root Canal Treatment in Waterloo
If you're dealing with tooth pain or infection, our team offers endodontics in Waterloo along with trusted care from a dentist in Waterloo to help save your tooth. Root canal treatment can relieve discomfort and prevent extraction. Call Trillium Dental Centre at 519-746-4000 to schedule your appointment.
How a Root Canal Procedure Works
Root canal therapy is the treatment used to save a tooth when the pulp — the soft tissue inside the tooth containing nerves and blood vessels — becomes infected or damaged. Without treatment, the infection spreads to the surrounding bone and the tooth is usually lost. With treatment, the infection is removed, the inside of the tooth is cleaned and sealed, and the tooth itself stays in place. Success rates for root canal therapy are very high (around 95 percent) when the procedure is appropriate for the tooth.
A root canal usually takes one or two visits. On the day of treatment, the tooth is numbed with local anaesthetic. A small opening is made through the top of the tooth to reach the pulp chamber. The infected pulp is removed and the canals are cleaned and shaped with small files. Once the inside of the tooth is clean and dry, the canals are filled with a rubber-like material that seals them off from future infection. A temporary or permanent filling closes the opening on top.
Most patients are surprised by how comfortable a root canal is compared to its reputation. The local anaesthetic eliminates pain during the procedure, and any discomfort after the appointment is usually mild and short-lived. Most teeth need a crown placed within a few weeks after root canal therapy because the treated tooth becomes more brittle without its inner pulp; the crown protects it from fracture.
When Root Canal Therapy Is Recommended
Root canal therapy is the right treatment when the pulp of a tooth is infected, inflamed, or damaged. Common reasons include:
- A deep cavity that has reached the pulp
- A crack or fracture that has extended into the pulp chamber
- Repeated dental procedures on the same tooth that have irritated the pulp
- Trauma to the tooth (a blow or impact) that has damaged the pulp even without visible damage
- Persistent severe toothache, especially one that wakes you at night
- Sensitivity to hot or cold that lingers long after the temperature is removed
- Pain when biting down on a specific tooth
- Swelling or tenderness in the gum around a specific tooth
- A pimple-like bump on the gum (a fistula) draining from the tooth
- An abscess (collection of pus) at the root tip visible on x-ray
If the tooth is too damaged to save, extraction with replacement (implant, bridge, or denture) becomes the option. Your dentist explains both paths so you can make an informed choice.
Aftercare and Long-Term Outlook
Recovery from root canal therapy is straightforward for most patients. Mild tenderness when biting on the treated tooth for a few days to a week is normal. Over-the-counter pain medication usually handles any discomfort. Avoid chewing on the treated tooth until the permanent restoration (usually a crown) is placed; the temporary filling is not strong enough for full chewing forces.
A treated tooth needs a crown in most cases, especially back teeth that carry heavy chewing loads. The crown is usually placed within a few weeks of the root canal. Without a crown, the treated tooth is at high risk of fracture, which can mean losing a tooth that the root canal otherwise saved. The crown protects the tooth and seals it against new bacteria entry.
Long-term, a root-canal-treated tooth with a crown can last for decades — often as long as the patient's other teeth. The treated tooth has no living nerve, so future cavities on that tooth would not produce pain warning signs; regular check-ups and x-rays catch any new problems before they become serious. Routine cleaning visits, daily brushing and flossing, and avoiding hard biting (ice, pen caps, fingernails) protect the long-term result.
Cost and Insurance Coverage
Root canal therapy cost depends on which tooth is treated (front teeth are simpler and lower cost than molars with multiple canals) and how complex the case is. The crown that usually follows root canal therapy is a separate cost. Trillium follows the current Ontario Dental Association Suggested Fee Guide for endodontic procedures and crowns, and we provide a written estimate at the planning visit.
Most private dental insurance plans cover root canal therapy at 70 to 80 percent under their basic or endodontic services category. The follow-up crown is usually covered at 50 percent under major restorative services. CDCP includes root canal therapy within its annual benefits framework. We submit pre-determinations to your insurer before treatment so coverage is clear in advance.
Frequently Asked Questions
Does a root canal hurt?
The procedure itself is done under local anaesthetic, so there is no pain during treatment. Modern root canal therapy is typically no more uncomfortable than getting a filling. Pain that brought you in (from the infection itself) usually starts to ease within a day or two after the treatment.
How long does the procedure take?
Most root canals take one to two appointments of 60 to 90 minutes each. Front teeth with single canals are usually completed in one visit. Back teeth (especially molars with multiple canals) sometimes need a second visit to complete cleaning and sealing.
Do I really need a crown afterward?
For most back teeth and many front teeth, yes. The treated tooth becomes more brittle without its inner pulp, and the access opening through the top of the tooth needs to be sealed long-term. A crown protects the tooth from fracture and seals it against new infection. Without a crown, the treated tooth has a much higher chance of failing.
Is extraction a better option?
Saving your natural tooth is usually preferable when realistic. Natural teeth function more comfortably than implants or bridges, and the bone and gum around them tends to stay healthier. Extraction with implant replacement is a good option when the tooth cannot be saved, but it involves a more complex sequence and higher overall cost in most cases.
Can a root canal fail?
Yes, though success rates are very high (around 95 percent). Failure can result from missed canals, new bacterial entry, or a crack that develops later. If a root canal fails, options include retreatment (redoing the root canal), apicoectomy (a small surgical procedure at the root tip), or extraction. Your dentist will explain options if this comes up.
How long until I can eat normally?
Soft foods on the opposite side for the first 24 hours after the procedure. After that, you can usually eat normally on either side, though avoid hard chewing on the treated tooth until the permanent crown is placed.