Several genetic gum and teeth diseases are found in Siberians. These oral diseases are common in Maine Coon, Persian, and Himalayan.

Accidental outcrosses between Siberians and other breeds has increased the incidence of gum diseases in Siberian.  While not permitted by any registry, outcrosses were used to alter color and coat density.  A single outcross in a high-end breed program might affect 1000 Siberians within a decade. SRI has tracked outcrosses by unusual blood type, genetic difference, disease progression, and by direct contact with breeders. 

These painful diseases tend to require removal of all teeth for the comfort of the cat. These are hereditary dominant disorders, so removing cats with gum disease from breeding is prudent. Keeping kittens from parents with hereditary gum disease should be discouraged.

(FORLs) - Feline odontoclastic resorptive lesions
Feline tooth resorption begin as erosions in the surface of the tooth near the gum line. Teeth are lost due to fracture, and should be pulled as needed to reduce pain. This hereditary disease is quite common in Persians.

(Stomatitis) - Feline Lymphocytic Plasmacytic Stomatitis/Gingivitis
Oral inflammation from stomatitis can be minor to life threatening. It is common in many breeds, including Himalayans, Persian, and Maine Coon. This disease typically begins as a red line across the gum line, and progresses to more severe inflammation. Cats with stomatitis may also develop bad breath. It is advisable to remove cats with FLUTD from breed programs.

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