4. (a) Identify the parts of the tooth labelled 1,2,3,4 and 5 - Junior Cycle Home Economics - Question 4 - 2008

1. Incisors: bite and cut food
2. Canines: tear food
3. Pre-molars: chew and grind food
4. Molars/Wisdom teeth: chew and grind food

1. Avoid foods and drinks that contain sugar to reduce the risk of cavities.
2. Eat a healthy diet that includes foods rich in calcium and vitamin D for strong teeth and bones.
3. Brush teeth at least twice a day, preferably after meals.
4. Use dental floss daily to remove food particles between teeth.
5. Replace toothbrush regularly and visit the dentist for check-ups.

Plaque consists of saliva, food particles, and bacteria that build up on the surface of teeth. If plaque is not removed, the bacteria produce acids that can erode tooth enamel. This erosion leads to cavities and, if untreated, can progress to more severe dental issues such as infections or gum disease.