It really isn't impossible, but it is not easy either, so getting your cat used to it at an early age is recommended. You may try to brush an older cat with very small progressive steps.
Tooth brushing is a process that is best started at an early age, and a process of building confidence in yourself and building trust between you and your kitten.
First, start getting your kitten used to having his lip lifted. Gently rub the teeth with your fingers. You may do this step for a few seconds over the course of a few days or until your kitten doesn't seem to mind. Be gentle and cuddle, tummy scratch or allow playtime afterwards.
Then add a little flavored pet toothpaste on your fingertip, such as tuna or chicken flavored pet toothpaste. Repeat the process.
Once your kitten is used to this, place a very small pet toothbrush, with a small amount of flavored toothpaste, in between the lips and the outside surfaces of the teeth. Its mouth doesn't need to be opened. A circular motion is best, but any brushing is better than none!
This is, in reality, the only surface of the teeth you will be able to brush. Don't try and pry open your kitten's mouth to get at the inner tooth surfaces. He's never going to let you do it again. The good news is, the outer surface of the upper premolars and molars is where most of the plaque and tartar accumulates. If you can get a little swipe over the incisors and canines, you are an expert.
Try to brush your cat's teeth weekly to twice weekly, and he will have excellent dental health for a lifetime.
Sharon E. Anderson, DVM
