Are there any tips for making brushing my cat’s teeth easier? - Briar Patch Veterinary Hospital
We recommend slowly training your cat to accept brushing of their teeth. Starting when they're young is the best way to do it, so they understand that it's a normal part of their day. Begin with a toothpaste that your cat really likes, and gradually get them to accept the toothpaste on a toothbrush. Then, start brushing their teeth for just a second or two, increasing the duration as they become more comfortable with the process.
Are there any tips for making brushing my cat’s teeth easier? - Horizon Animal Hospital
One of the things is, early in life, trying to get cats accustomed to touching their mouth and lifting their lip up. Those are some things that can be helpful. If that acclimation to teeth brushing has not been done prior, you can always try to give them a treat or something afterwards, making it a rewarding procedure.