What is plaque?

Plaque refers to the soft, sticky film of bacteria that continuously forms on the surfaces of teeth. It is primarily composed of food particles, bacteria, and saliva. The importance of plaque lies in its ability to lead to dental issues such as cavities and gum disease if it remains undisturbed. Regular brushing and flossing effectively remove this soft buildup, which is why maintaining good oral hygiene is essential.

The other options describe different dental materials or products that are not related to the definition of plaque. Hard materials that require scraping off typically refer to calculus or tartar, which is plaque that has hardened on the teeth and necessitates professional cleaning. Mouthwash is a liquid used for rinsing the mouth and does not relate directly to the formation or composition of plaque. Similarly, a rinsing liquid can refer to a variety of solutions used in dental care, but it does not define plaque itself. Thus, the correct understanding of plaque as a soft buildup that can be removed through proper oral hygiene practices is crucial for effective dental care.