What Is a Failed Root Canal?
A failed root canal occurs when the initial treatment doesn’t fully remove infection, fails to heal properly, or a new problem develops afterward. This can happen months or even years after the original procedure.
While most root canals are successful, failure is still a possibility that requires attention from a skilled endodontist in Vancouver.
What Are the Symptoms of a Failed Root Canal?
Recognizing the symptoms early can help you avoid complications. Common signs of a failed root canal include:
- Persistent pain or pressure near the treated tooth
- Swelling or tenderness in the gums
- A visible pimple or bump on the gum
- Discoloration of the tooth
- Sensitivity to hot or cold
- Bad taste or odor in the mouth
If you’re experiencing any of these symptoms, visit a walk-in dental clinic in Vancouver or consult with Dr. Alavi at our general dentistry clinic as soon as possible.
Not all discomfort means failure—sometimes it’s part of the normal root canal recovery time.
Why Do Root Canals Fail?
Root canal failure can be caused by multiple factors:
- Missed or untreated canals
- Complicated root canal anatomy
- Cracks or fractures in the tooth
- Delayed or poor placement of the crown
- New decay or trauma
Good Root Canal After Care can lower the risk of reinfection—avoid smoking, keep the area clean, and follow your dentist’s instructions.
What Happens Next When a Root Canal Fails?
When a root canal fails, there are several treatment options available depending on the severity of the issue:
| Condition | Possible Next Steps |
| Mild discomfort or tenderness | Monitoring, pain management |
| Infection or abscess | Endodontic retreatment |
| Structural damage (e.g., crack) | Tooth extraction and replacement (e.g., dental implant) |
Learn more about endodontic retreatment here.
What Is the Root Canal Failure Rate?
According to studies, root canal treatment has a high success rate—about 85% to 97%. However, failure can still occur. That’s why regular checkups with an endodontist in Vancouver are crucial.
What Causes Root Canals to Fail?
- Incomplete cleaning or sealing of canals
- Leakage from the crown or filling
- Bacterial contamination
- Inadequate oral hygiene after treatment
Is It Possible to Repair a Failed Root Canal?
Yes, in most cases. The most common solution is endodontic retreatment, where the dentist removes the original filling material, cleans the canal again, and reseals it properly.
Other options include:
- Apicoectomy (removing the tip of the root)
- Extraction and implant placement (if the tooth can’t be saved)
Can You See a Failed Root Canal on an X-ray?
Yes. An experienced dentist or endodontist in Vancouver can often identify issues such as dark spots near the root tip, indicating infection or bone loss.
Should the Dentist Pay for a Failed Root Canal?
Responsibility depends on the cause. If the failure is due to negligence or improper technique, the dentist may offer retreatment at a reduced cost or for free. However, many failures occur due to unpredictable biological factors.
Can a Root Canal Become Infected Again?
Yes. Even after a successful treatment, reinfection is possible if bacteria re-enter the tooth. That’s why aftercare and follow-up visits at a reliable general dentistry clinic are essential.
Patient Story: Roman’s First Root Canal Experience
When Roman arrived at Hemlock Dental, he wasn’t expecting to need a root canal. What began as a broken tooth from eating a pomegranate quickly turned into something more serious. After a thorough examination, Dr. Alavi and the team discovered underlying cavities that had gone unnoticed — a reminder of how important regular dental checkups are.
Despite it being his first root canal, Roman felt well cared for throughout the process. The supportive and experienced staff helped ease any anxiety, and the treatment successfully saved his natural tooth. Roman left the clinic impressed by the professionalism of the team and grateful for their skillful care.
Today, Roman is pain-free — and much more mindful about his oral health. His story is a reassuring example that even unexpected dental issues can be resolved with the right team and timely treatment.
Root Canal or Pull Tooth?
Not sure whether to save or extract the tooth? Here’s a quick comparison:
| Option | Pros | Cons |
| Root Canal | Preserves natural tooth, less invasive | May require retreatment |
| Tooth Extraction | Removes infection completely | May need implant or bridge later |
Always consult a dental expert to decide the best course.
Get Help from Hemlock Dental
Whether you’re dealing with dental pain after root canal or deciding between root canal or pull tooth, our team at Hemlock Dental, led by Dr. Alavi, is here to help.
- Trusted general dentistry clinic in Vancouver
- Experienced endodontist in Vancouver
- Emergency care available at our walk-in dental clinic in Vancouver
📞 Book your appointment now and get your dental health back on track!
