Tartar, also known as dental calculus, is caused by the accumulation of mineralized plaque on the teeth. The interaction of bacteria, food particles, and saliva results in plaque formation, a sticky coating that sticks to the teeth. If plaque is not consistently removed by brushing and flossing, it might eventually harden and turn into tartar. Tartar is a hardened substance that firmly attaches to the tooth surface and appears as a yellowish or brownish deposit. It can contribute to oral health issues like tooth decay, gum disease, and bad breath. Regular dental cleanings and maintaining good oral hygiene practices are essential in preventing tartar buildup.