Plaque is food debris and their products, which form a sticky, concentrated film that adheres to the teeth. The part of the tooth next to the sulcus is extremely difficult to keep free of bacterial plaque, and if not removed constantly, or left undisturbed for a few days, will form tartar - a rough, hard material that adheres to teeth. Plaque and tartar build-up constitute the primary cause of periodontal disease.


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