Sierra Veterinary Clinic

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Feline resorptive lesions… Ouch!

Feline resorptive lesions… Ouch!

This Is Moe.

He is one of our awesome veterinary technician’s fur-baby. (Please don’t worry about his eye. It developed that way and it is not painful).

Here are two x-rays of his fourth premolar on the left side from a dental cleaning we did for him a couple of months ago.

Notice the large, dark hole in the fourth premolar. That is a feline resorptive lesion. Amy is not feeding Mo too many sweets because they are not caused by sugar in the diet and although they are commonly seen with plaque and gingivitis, we don’t know how they are related. The most important thing to know about them is that they are painful.


If your cat is chattering at random times or not wanting to eat hard food one, or several as is commonly seen, of these can be the cause.

Because we don’t know what causes feline resorptive lesions there is no simple way to prevent them. Although they are not caused by build up on the teeth, aggressive preventative care is the best way to be aware of them so they can be treated. The treatment of choice is generally to remove the tooth as the it will continue to be slowly and painfully eaten away.

Brushing your cat’s teeth and keeping a close eye on their oral health is the best first line defense against these lesions but a dental cleaning with full mouth x-rays is the most accurate way to look for them.

Dental diets and treats with the VOHC label are okay alternatives for cats that just won’t tolerate tooth brushing. Please bring your cat in for an exam before starting dental diets and treats because these things can be painful if your pet’s periodontal disease is more than very mild. A dental cleaning under general anesthesia may be needed first.

Although we can’t prevent these lesions astute oral care and biannual examinations with your veterinarian should catch these before they cause too much pain.

After his dental several months ago Mo was more outgoing and started to groom himself more. He is doing great after Amy took out that nasty 4th premolar!

Amy and Bella's Dasuquin Story
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Thursday, 19 September 2019

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