'Sweet tooth may lead to tooth decay'. Explain why? What is the role of tooth paste in preventing cavities?

Explanation

### Step-by-Step Solution:

1. **Understanding Tooth Decay**:
- Tooth decay occurs when the enamel, the hard outer layer of the tooth, is damaged. This damage is primarily caused by acids produced by bacteria in the mouth.
- When we consume sugary foods, the leftover food particles in our mouth provide a food source for bacteria.

2. **Role of Bacteria**:
- The bacteria metabolize the sugars from the food particles and produce acids as a byproduct.
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