Hardened Plaque on Teeth A Guide to a Healthier Smile

You know that stubborn, yellowish-brown stuff that clings to your teeth and just won't budge, no matter how much you brush? That's hardened plaque. In the dental world, we call it dental calculus or tartar, and once it sets in, only a professional can safely get it off. What Is Hardened Plaque on Your Teeth?…