The best core exercises that protect your back Dental tartar, also known as dental calculus, is a hard buildup of bacterial plaque that forms on the teeth and can lead to more serious dental ...

Tartar, also known as calculus, forms in your dog's mouth when plaque—a soft, sticky substance—builds up on the teeth. If plaque is not removed, it hardens over time due to minerals in the dog ...

A team of researchers has determined what people of that era consumed, based on the DNA analysis of food remains in tartar, a plaque layer formed on teeth. Not surprising, what they found is not ...