What a root canal actually treats
Inside every tooth is a small chamber of soft tissue — the pulp — that contains nerves and blood vessels. When decay gets deep, when a tooth cracks, or when trauma damages the pulp, that tissue becomes inflamed or infected. The pain from that is the throb that keeps you up at night.
A root canal removes the infected pulp, cleans and disinfects the tiny canal system inside the roots, and seals the tooth so bacteria can't get back in. The tooth stays. The pain goes.
Why "complex" cases are different
Not every root canal is routine. The ones that make a difference to do well include:
- Molars with four or five canals, including the often-missed MB2 canal in upper molars.
- Curved or calcified canals that require careful negotiation.
- Retreatments, where a previous root canal didn't fully heal and needs to be reopened and redone.
- Cracked teeth, where the crack has to be evaluated under magnification before committing to treatment.
- Teeth with prior trauma, where the canal anatomy has changed over time.
How we do it at Diamond Dental Don Mills
Diagnosis before treatment
Not every toothache is a root canal. We start by identifying the actual source — using cold testing, bite testing, and when warranted, a 3D CBCT scan to see inside the tooth and surrounding bone. A wrong diagnosis is how people end up with procedures they didn't need.
Magnification and rotary instrumentation
Treatment is done with magnification so the canal system can be seen clearly, and with modern rotary nickel-titanium files that shape the canals precisely without over-enlarging them. The tooth is isolated with a rubber dam to keep it clean and dry throughout.
Comfort
Profound local anesthesia is the baseline. For patients with anxiety or long appointments, we can discuss sedation options. Most patients report it was easier than expected.
Finish and protect
A root-canaled tooth is cleaner and more brittle than before — it should almost always receive a crown or onlay afterward to protect it from fracture. We plan that restoration as part of the treatment, not as an afterthought.
What to expect after
Most patients feel dramatically better within 24–48 hours. Mild soreness when biting is normal for a few days; over-the-counter anti-inflammatory medication usually handles it. You'll come back for the final restoration, and then we follow the tooth at regular checkups to confirm healing radiographically.
When a root canal isn't the right answer
Some teeth are too broken down, too cracked, or have too little remaining structure to save. In those cases, an extraction followed by an implant is often the better long-term choice. We'll tell you honestly when that's the case — a root canal that fails in two years is worse than an implant done right the first time.
Book an endodontic consult
If you're in pain, don't wait. Infections in the pulp don't resolve on their own, and early treatment is almost always simpler than late treatment.
Call (416) 551-2211 or book online. Same-week appointments are usually available for patients in pain.