Lesson 1 Quiz Question Title * 1. Which part of the tooth is the hard, outer layer that protects it from decay? Pulp Enamel Dentin Root Question Title * 2. What is dental plaque? A type of toothpaste A permanent protective coating on teeth A sticky film of bacteria that forms on teeth A tool used by dentists Question Title * 3. What is one of the main causes of gum disease (gingivitis)? Too much brushing Lack of calcium Poor oral hygiene and plaque buildup Drinking cold water Question Title * 4. What is tooth decay (cavities) caused by? Drinking water Brushing too much Bacteria and sugars that damage tooth enamel Talking a lot Question Title * 5. Which of the following is a common sign of oral disease? Fresh breath Pink, firm gums Bleeding gums when brushing Smooth white tongue Question Title * 6. Why is oral health important for your overall health? It helps you run faster Poor oral health can lead to other health problems like heart disease Teeth are just for looks It doesn’t affect your general health Done