1. Haileybury Astana IGCSE Science
TEETH
Haileybury Astana IGCSE Science

2. Learning Objectives Draw the structure of teeth
Identify the four types of human teeth and describe their action in eating food
Describe the process of tooth decay.
Suggest ways of reducing tooth decay.

3. Structure of a tooth (Molar)
Enamel
crown
Dentine
Pulp cavity
Blood vessels and nerves
Root
Fibres attaching teeth to jawbone
Apex
Bone

4. Structure of a tooth (Molar)
Draw the structure of a tooth and label it!

5. Types of Teeth
Draw each type of tooth and label it.

6. Types of Teeth Match the pairs! Molar Canine Incisor Premolar
Chisel shaped for biting off chunks of food
Canine
Large and flattened for crushing food
Incisor
Flattened for crushing food
Premolar
Pointed for gripping and tearing

7. Types of Teeth Incisor Canine Premolar Molar
Chisel shaped for biting off chunks of food
Canine
Pointed for gripping and tearing
Premolar
Flattened for crushing food
Molar
Large and flattened for crushing food

8. Tooth decay or cavities are caused by a combination of bacteria and food.
These bacteria change the foods that we eat, especially sugars and starches, into acids.
The acid dissolves the enamel.
Continuous damage creates holes in your teeth, which are called cavities.
Tooth decay is prevented by brushing, flossing and using fluoride-containing products.
Tooth Decay