FORL (Feline Odontoclastic Resorptive Lesion), more modernly referred to as Tooth Resorption (TR), is defined as a painful and progressive dental disease where the body's own cells attack and destroy the structure of the tooth. The process begins when cells called odontoclasts, which normally break down baby teeth to make room for adult teeth, become inappropriately active in the adult cat. They eat away at the tooth enamel and dentin, often starting at the gum line. This results in lesions that look like a cavity but are actually the tooth dissolving. In the later stages, the gum tissue grows over the hole to cover the exposed nerve, creating a characteristic "pink spot" on the tooth. For the Chronic Kidney Disease (CKD) patient, this condition is critical because it is intensely painful. The pain frequently causes "jaw chattering" or the dropping of food, leading to anorexia (refusal to eat) and weight loss that can be mistaken for kidney nausea. Treatment typically requires the surgical extraction of the affected teeth. This presents a difficult decision for the caregiver, as the necessary anesthesia poses risks to kidney function, yet leaving the painful tooth untreated destroys the cat's quality of life and ability to eat.
Disclaimer: This content is for educational purposes only and does not constitute veterinary medical advice. Always consult with your primary care veterinarian or a veterinary internal medicine specialist regarding your cat’s specific condition.