BEST CHILD DENTIST IN AMINJIKARAI! We generally think of bacteria in the body as bad. But we need a variety of microbes to remain healthy. A proper balance between good and bad bacteria is the key. Bacteria live in complex groups and are highly organized. Think of them as a film—like barnacles that grow on the bottom of a boat. Brushing and flossing disrupts this biofilm, impairing its ability to thrive and produce the acid that attacks tooth enamel. It’s this biofilm that causes bad breath, inflammation and ultimately, gum disease.