Over time and even with the best care, the surface of your teeth will accumulate residue which you may find a challenge to get rid of entirely. This residue is often referred to as plaque and when it remains on the teeth it hardens and forms calculus (which is a rough, porous substance. If left untreated, it could result in dental problems, particularly to the gumline.
The bacterial toxins in the build up on and under your gums can begin to break down the bone, as well as the connective tissues which are holding the teeth in place. Tartar and calculus are not easily cleaned by brushing and flossing the teeth. This is why it is so important to see your dentist for regular cleanings and exams and to follow good oral hygiene regimen at home.