What is plaque primarily composed of?

Plaque is primarily composed of bacteria, food particles, and saliva. This biofilm forms on the surfaces of teeth and can lead to dental issues such as cavities and gum disease if not properly removed through regular brushing and flossing.

Bacteria in plaque produce acids that can erode tooth enamel, while food particles provide sustenance for these bacteria, allowing them to multiply. Saliva plays a crucial role as well; it not only helps in the initial formation of plaque by providing moisture and a medium for bacterial adhesion but also contains minerals and enzymes that can aid in oral health.

The other compositions listed emphasize components that are not primary constituents of plaque. For instance, mineral deposits refer more to calculus or tartar that form from hardened plaque rather than its soft, initial state. Enamel and dentin fragments pertain to parts of actual teeth rather than the microbial and organic buildup specific to plaque. Fluoride and calcium are minerals that can contribute to teeth health but do not form the composition of plaque directly.