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Merck Manual

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What is Plaque?

What is Plaque?

Plaque is a thin film of food debris, bacteria, saliva, and dead cells that is continually deposited on your animal’s teeth. Plaque that is present for more than 72 hours begins to harden into a substance called tartar (calculus) that accumulates at the base of the teeth. This buildup irritates the gums and contributes to the development of gum disease.