Which term is the hard deposit on teeth formed from minerals?

Which term is the hard deposit on teeth formed from minerals?

• A. Composite
• B. Cavity
• C. Calculus
• D. Bridge

Answer: (C)

Hard mineralized deposit on teeth is called calculus, also known as tartar. Calculus forms when dental plaque isn’t removed and minerals from saliva harden the biofilm, creating a rough, rock‑like layer that can build up above and below the gumline. Once hardened, it cannot be brushed away and requires professional scaling to remove. This deposit roughens the tooth surface, promoting more plaque retention and irritation of the gums, which can contribute to periodontal disease. The other terms refer to different things: composite is a resin used to fill decayed teeth, a cavity is tooth decay, and a bridge is a fixed prosthetic that replaces missing teeth.

Hard mineralized deposit on teeth is called calculus, also known as tartar. Calculus forms when dental plaque isn’t removed and minerals from saliva harden the biofilm, creating a rough, rock‑like layer that can build up above and below the gumline. Once hardened, it cannot be brushed away and requires professional scaling to remove. This deposit roughens the tooth surface, promoting more plaque retention and irritation of the gums, which can contribute to periodontal disease. The other terms refer to different things: composite is a resin used to fill decayed teeth, a cavity is tooth decay, and a bridge is a fixed prosthetic that replaces missing teeth.