This is a dental radiograph of some of the teeth of a 5 year old female cat. Molar 1, on the left, is radiolucent (see through) because the tooth has a Feline Odontoclastic Resorptive Lesion (FORL). There are no dental ligaments present. The Premolar 4 to the right has dental ligaments and is thick and white. A crown amputation was done and the roots drilled lower, then the gum was sutured.
The tooth to the left is not viable and is reabsorbing into bone. The root canal is exposed and this is a painful tooth. The crown amputation resolves pain and will allow the dead roots to reabsorb.
Joan M. Freesh, DVM