Cat Dental Disease and the Feline Tooth Resorption Problem

Feline tooth resorption (TR) is the most common dental disease of cats, affecting up to 75% of adult cats. The condition causes chronic pain and requires surgical extraction, yet remains poorly recognized by most owners.

Key Facts

Tooth resorption (formerly called feline odontoclastic resorptive lesions or FORLs) affects approximately 30-75% of adult cats
TR involves the progressive destruction of tooth structure, eventually exposing the pulp cavity to the oral environment
Two types exist with different radiographic appearances and recommended treatments
Type 1 TR retains vital pulp and requires full root extraction; Type 2 shows root replacement with bone
Cats with TR rarely show obvious pain signs but will react when the lesion is touched during examination
Dental radiography is essential for TR diagnosis - the extent of disease is rarely apparent from visual examination alone
The cause of TR is not fully understood; diet, vitamin D metabolism, and immune factors have been proposed
Once TR develops in one tooth, affected cats are at high risk for additional teeth being affected over time

Welfare Considerations

Tooth resorption is a welfare crisis concealed by cats' stoic pain masking. A cat with multiple active TR lesions experiences chronic dental pain that affects eating, play, and general wellbeing. The condition progresses insidiously - owners may notice reduced enthusiasm for eating or head shaking but attribute this to preference or personality rather than dental pain. The welfare intervention is reliable: surgical extraction of affected teeth eliminates the pain source, and cats routinely show dramatic behavior improvements after treatment. The challenge is detection - TR is only reliably diagnosed through dental radiography under anesthesia, which requires a veterinarian willing to recommend anesthetic dental procedures for cats who appear otherwise well. Regular dental radiographs at professional cleanings catch TR at earlier, more treatable stages.

What You Can Do

Request dental radiography at every professional dental cleaning for your cat
Monitor for TR signs including reduced food enthusiasm, head shaking during eating, and jaw chattering
Ensure your veterinarian has modern dental radiography equipment before scheduling dental procedures
Pursue extraction of TR-affected teeth promptly rather than monitoring - TR does not resolve spontaneously
Implement preventive home dental care to slow dental disease even though TR prevention is not fully understood
Ask specifically about TR assessment at every senior cat wellness examination