This kibble has a shape and size that support grasping and tooth penetration into it. This results in a brushing effect, cleaning your cat’s teeth and helping to reduce plaque accumulation and further tartar build-up. Equally important is the effect this diet has on your cat’s hairball formation. Royal Canin Dental Cat contains a specific blend of fibers, including psyllium, to control hairball formation. This happens because this food helps to eliminate excess ingested hair through your cat’s stools. Royal Canin Veterinary Dental Cat key benefits: Royal Canin Veterinary Dental Cat is an excellent choice for cats with dental sensitivities. This kibble shape and size promote a brushing effect to reduce plaque formation and tartar build-up. Royal Canin Dental Cat contains a specific blend of fibers (including psyllium) to control hairball formation.