For the Nutritional Management of Cats with Dental Disease. Brought on by a buildup of plaque and tartar, dental disease can cause painful and even serious problems. Prescription Diet t/d Feline cat food is formulated specifically for the nutritional management of cats with dental disease caused by plaque and tartar buildup. If left unchecked, this buildup can lead to gingivitis, a dental condition that can weaken the gums and tissues that support the teeth. The special fiber matrix of t/d Feline scrubs the exposed tooth surface like an edible toothbrush, reducing bacteria-laden plaque. The nutritional formulation of Prescription Diet t/d may also be useful for pets with a variety of conditions.