Anatomy and conditions
Tartar
Also called calculus
Hardened plaque on teeth that brushing cannot remove; a hygienist must scrape it off.
Tartar, also called calculus, forms when plaque stays on the teeth and hardens. It can sit above or below the gum line and gives bacteria a rough surface to cling to, which irritates the gums. Brushing and flossing cannot take it off, so a professional cleaning is needed. A heavy buildup can mean a patient needs a deeper cleaning instead of a standard one.
Example at the front desk
She has heavy tartar buildup, so the hygienist may recommend a deeper cleaning.