CVMA Veterinary Assisting ACT Practice Exam

Which term refers to the mineralized deposit on teeth?

Calculus Tartar Plaque Gingivitis

Correct Answer:

Calculus

Explanation:

Think of plaque as the soft film that forms on teeth. When minerals from saliva deposit into that plaque, it hardens into calculus, which is commonly called tartar. This mineralized layer sticks to the tooth surface and can form above or below the gumline. It isn’t removable with ordinary brushing and usually needs professional cleaning to remove. Because calculus creates a rough surface, more plaque and bacteria tend to cling to it, promoting gum problems over time. Gingivitis is the inflammation of the gums caused by irritation from plaque and calculus, not the deposit itself. So the term for this mineralized deposit on teeth is calculus (tartar is the everyday name for the same thing).

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