Without proper treatment, the teeth may become infected and fall out. The resulting infection may spread to other parts of the body such as the kidneys or heart valves. Brush your cat's teeth regularly using a toothbrush and toothpaste designed especially for cats or a child-sized toothbrush dampened and rubbed with baking soda. Do not use toothpaste formulated for humans as your cat will swallow it and it may cause an upset stomach. If your cat is reluctant, use a bathtowel as a restrainer or try putting a little bit of tuna juice on the toothbrush.
Most cats tend to accumulate plaque on the outside of their upper teeth.
Brush the outer surfaces of your cat's teeth with a gentle, circular motion. When your cat becomes used to this type of cleaning, try brushing the inner surfaces. Do this by gently pushing back on the corners of the jaws and tilting back the head. If your cat has red, swollen, or bleeding gums, bad breath, dark spots on his molars, chronic runny nose, loses weight, or is reluctant to eat, you should contact your vet immediately. Finally, though there is no substitute for regular dental care, dry, crunchy foods can help to keep your cat's teeth clean.