👉 "Carious" is a medical term that refers to an infection of the teeth caused by dental plaque, which is a film of food particles and bacteria. Carious teeth can be difficult to treat because they are often hidden beneath the enamel (the outer layer of the tooth) and it takes time for the bacteria to reach them. If left untreated, carious teeth can lead to cavities, gum disease, and even tooth loss. To prevent or treat carious teeth, it is important to