19 May When Does a Cat Need a Root Canal?
At Veterinary Dental Specialists of Wisconsin, one of the most common questions we hear is:
“Does my cat really need treatment for that tooth?”
If your cat has a broken, discolored, or painful tooth, a root canal may be one of the best ways to relieve pain while preserving the tooth.
What is a root canal?
A root canal (endodontic therapy) is a procedure that treats the inside of a damaged tooth. Inside every tooth is a space called the pulp, which contains nerves and blood vessels.
When this pulp becomes exposed or infected, it is painful and cannot heal on its own.
A root canal:
- Removes the diseased pulp
- Disinfects the inside of the tooth
- Seals it to prevent future infection
This allows us to save the tooth instead of removing it.
Why would a cat need a root canal?
1. Broken teeth with pulp exposure
This is the most common reason we perform root canals in cats.
You may notice:
- A chipped or shortened tooth
- A small red, pink, or black dot in the center of the tooth
- Sharp edges
According to the American Veterinary Dental College, fractured teeth with pulp exposure are painful and require treatment—either extraction or root canal therapy.
2. Discolored (dead) teeth
A tooth that turns:
- Gray
- Purple
- Dark yellow
is often non-vital (dead). Even if it doesn’t look broken, it may have an infection at the root.
3. Tooth root abscesses
Infections can spread below the gumline and cause:
- Swelling under the eye
- A bump or draining tract on the face
- Bad breath
- Decreased appetite
The American Animal Hospital Association notes that dental infections can impact a pet’s overall health and should be treated promptly.
4. Preserving important teeth
In many cases—especially with the canine (fang) teeth—we recommend saving the tooth when possible.
These teeth are important for:
- Normal eating and chewing
- Jaw strength and structure
- Comfort and quality of life
Signs your cat may have a painful tooth
Cats are very good at hiding discomfort. Many cats with dental pain still eat and act “normal.”
Watch for:
- Eating more slowly or dropping food
- Chewing on one side
- Pawing at the mouth
- Bad breath
- Less grooming
- Subtle behavior changes
The Cornell University College of Veterinary Medicine emphasizes that significant dental disease can be present even when signs are minimal.
Root canal vs. extraction — what’s best for your cat?
Both options treat pain and infection. The right choice depends on your cat and the tooth involved.
Root canal:
- Saves the tooth
- Maintains normal function
- Ideal for important teeth (like canines)
Extraction:
- Removes the tooth completely
- Often less costly
At our hospital, we walk you through both options and help you decide what’s best for your cat and your goals.
What to expect at Veterinary Dental Specialists of Wisconsin
We take a gold-standard approach to dental care:
- Comprehensive oral exam under anesthesia
- Full-mouth dental radiographs (X-rays) to evaluate every tooth
- Advanced imaging, including cone beam CT (CBCT) when indicated
- Treatment performed by a board-certified veterinary dentist and trained team
- Close monitoring with a dedicated anesthesia professional
During a root canal, we:
- Access the inside of the tooth
- Remove infected tissue
- Clean and disinfect the canal
- Fill and seal the tooth
Is a root canal safe for my cat?
Yes. Your cat is under carefully monitored anesthesia the entire time.
In fact, the procedure relieves pain, because exposed or infected pulp is extremely uncomfortable.
Most cats:
- Recover quickly
- Eat normally within a short time
- Are noticeably more comfortable afterward
What happens if we don’t treat it?
Untreated dental disease can lead to:
- Ongoing pain
- Infection spreading to the bone
- Facial swelling or draining tracts
- Tooth loss
- Effects on overall health
The American Veterinary Medical Association notes that oral infections can impact systemic health if left untreated.
Our philosophy
At Veterinary Dental Specialists of Wisconsin, we believe:
- Dental disease is not cosmetic—it’s medical
- Cats deserve to live pain-free, even when they hide it well
- Preserving teeth when appropriate can improve long-term comfort and function
When should you schedule an exam?
If you notice:
- A broken or discolored tooth
- Bad breath
- Facial swelling
- Any change in eating or behavior
Early treatment often means simpler procedures and better outcomes.
We’re here to help
If you have questions about your cat’s teeth or have been told your cat may need a root canal, our team is happy to help you understand your options.
Photo by Sangia on Unsplash used with permission under the Creative Commons license for commercial use 05/19/2026