An oral disease that often manifests as bright red, discolored teeth is feline odontoclastic resorptive lesions (FORL). These lesions cause extreme pain and can be found on any tooth of the cat. 

A yellow, orange or brown build up of teeth indicates calculus, which occurs due to plaque films, formed from bacteria.

A dead tooth may be grey or black.

Feline dental issues should never be ignored, as bacterial infections are commonly found in dental complications. A bacterial infection in a tooth may spread throughout the body and damage organs.

In cats, healthy teeth are generally white. Any variation in color indicates issues in oral health or tooth damage. Severe dental diseases can also change the color of a cat’s teeth. A very large percent of cats suffer from a degree of dental issues or disease from a young age. By the time that discoloration occurs, the cat may have been experiencing oral pain for some time. After a tooth has died, its color will darken significantly.

Whenever a cat’s teeth are not purely white, underlying oral health issues are a possibility. By inspecting your cat’s mouth on a regular basis you can spot symptoms as soon as they arise. Symptoms are as follows:

Many different factors can cause a cat’s teeth to discolor. Periodontal disease and trauma to the face or mouth are the most common causes. Known causes and risk factors include: 

All teeth should be checked as a part of a regular, annual vet visit. If symptoms have made an appointment necessary sooner, the veterinarian will complete an oral exam. You will be asked how long discoloration has been noticed on the cat’s teeth. If the cat has undergone trauma, a whole body assessment will be necessary to determine if any life threatening issues are present. 

X-rays will be required to check for any reduction in bone density of the teeth and to evaluate the roots. A periodontal probe or “shepherd’s hook” may be used to evaluate the affected teeth. Pre-anesthetic blood work, including a complete blood count and a biochemical profile, will be needed to determine whether the cat is a suitable candidate for general anesthesia. This is even more of a concern when the cat has reached old age. The liver and kidneys will need to be evaluated before treatment is commenced.

If you notice discolored teeth in your cat’s mouth, never wait to see if more symptoms arise. This can be harmful to your cat, and cause it to go through unnecessary pain. 

A deep tooth cleaning can be done by your veterinarian to help remove any buildup of tartar. This is an excellent way of restoring dental health and minimising gingivitis. Many cats need two or three cleans in their lifetime.

Teeth that are completely dead or rotten need to be removed from the mouth to prevent infection. Tooth pulling is a quick procedure. Cats have no difficulty eating after having teeth pulled, even if the number of removed teeth is great.

This option may be chosen if the veterinarian is highly skilled and having the tooth remain in the mouth will benefit the cat. This can be costly.

This treatment can allow the cat to have some tooth function back by inserting a cover over the remainder of chipped or broken teeth. Dentinal tubules are sealed prior to the installation of a crown. Not every vet offers this as an option and complications can occur.

If any infection is present in the mouth, antibiotics will be needed to rid the body of harmful bacteria. Prescriptions generally last from two to four weeks. 

Cats respond very well when mouth pain that leads to tooth discoloration is relieved. You may notice a behavioral change for the better. The quality of life can be greatly improved for the cat after successful treatment. Diet should be adjusted to include crunchy items to help save the other teeth. It also helps to brush teeth daily when possible.

With prompt treatment, prognosis is good.

Regular dental inspection should be a part of your cat’s annual vet visit. You can also regularly monitor your cat’s mouth for any variation in tooth color at home. It is a good idea to invest in a toothbrush and toothpaste for your cat. Most cat toothpaste contains enzymes that help control plaque buildup. It is best to start brushing gently without toothpaste. Eventually, when the cat is comfortable with the feeling of brushing, toothpaste can be added. Brushing the teeth several times a week is often all that is needed to maintain oral health.