Odontoclastic Resorptive Lesions Cat Cavities

An odontoclastic resorptive lesion (ORL) is a common feline dental problem. It is estimated that 65-85% of cats over 5 years of age are affected. These lesions are usually located where the gum meets the tooth. The most common teeth affected are the lower premolars.

Patients affected with ORL's may drool, have reddened gums or difficulty eating. Most cats are painful and may "chatter" when the area is touched. A portion of affected cats do not show any clinical signs and are only identified on their annual examination.

Dental X-rays are extremely helpful in making the diagnosis as well as assisting in treatment planning. We recommend that patients diagnosed with an ORL should have a complete mouth series of x-rays to identify any other, possibly hidden lesions.

Treatment includes a though oral examination under anesthesia, ultrasonic cleaning, polishing, and full mouth X-ray series. The affected tooth/teeth will have either a:

• Surgical extraction (crown & roots)
• Crown amputation

Based on the extent of the lesion(s) and if the root is resorbing (blue arrow) or is normal Green arrow).

These sites are flushed with an antiseptic and tissues sutured. Post-operatively these patients will be dispensed pain medication.

Our goal is to identify all lesions under one anesthetic and treat them before they cause more pain or worsen. Then during your pet's annual visit we will perform a thorough oral exam watching for new lesions if they occur.