EZDOG Classic Dental Kit for Pets, All Dogs The bristles are in cleaning contact with every exposed part of each tooth, and in massaging contact with the gum lines in a single stroke. Fitting snug to all exposed parts of the teeth, top, front and back, it is much easier for you to keep the brush on your pet's teeth even. Brushing your pet's teeth is a major step to keeping your pet healthy and happy. Brushing wards off bad breath, gum disease and other mouth infections. There is a scientifically proven connection between unhealthy gums and heart disease.