What is Tartar (Calculus)?

Calculus is dental plaque that has mineralized. Calculus can form when plaque is not removed from the tooth surfaces. This plaque becomes old and eventually forms into calculus. Calculus can form above or below the gum line. The bacterium that sticks to calculus can cause gum disease (gingivitis) or periodontal disease. Calculus cannot be removed by brushing and flossing. A dental hygienist checks for calculus formation when you visit the dental office. It is removed with special instruments designed to adapt to the tooth surface affected without causing trauma to the soft gums.