It's a war of attrition. On the one side is the patient diligently brushing their teeth twice daily, and on the other side is bacteria, specifically the kind that live in the human mouth and accumulate to form plaque and tartar. These bacteria are responsible for the greatest 2 enemies of dental health: tooth decay and gum disease. Keeping up with a good dental care regime at home is not enough to keep these diseases at bay. Patients also need a dentist on their side.