What is tooth decay?, 6; What are teeth made off?, 8; What causes tooth decay?, 10; What happens when a tooth decays?, 12; How do dentists treat tooth decay?, 14; How can you stop tooth decay?, 16; What is gum disease?, 18; How is gum disease treated?, 20; How can you prevent gum disease?, 22; Which food and drinks harm teeth!, 24; Which food and drinks are good for teeth?, 26; Glossary, 28; Find out more, 29; Index, 30.