GRAZIANO GIGLIO, DDS: Plaque is just an accumulation that you get on teeth, which is made up of bacteria and its byproducts.
DAVID FOLK THOMAS: Where does this accumulation come from? If I'm just minding my own business, am I going to get plaque? Is it just through food? Where does it come from?
PAUL KAMEN, DDS: Unfortunately yes. The plaque develops no matter what you do. People often ask me, "Well, what if I don't eat?" You still collect plaque. The plaque is just part of our environment and part of the oral environment.
It tends to collect unfortunately in the places that are the hardest for us to get to with our toothbrushes, namely the little crevice between the gum and the tooth and also the space just in-between the teeth, and again, in the little cracks and fissures on the biting service of the teeth.
DAVID FOLK THOMAS: Why is plaque bad? What happens?
GRAZIANO GIGLIO, DDS: It can cause two diseases -- periodontal disease and it can cause cavities.
DAVID FOLK THOMAS: Explain what those diseases are.
PAUL KAMEN, DDS: Periodontal disease is the disease of the tissues that surround and support the teeth. People think of periodontal disease as gum disease, which it is but it also and more importantly involves the bone that helps to support the teeth.