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Fun Video: What causes Tooth Decay or Cavities? Video Lecture | Science Class 7 (Old NCERT)

FAQs on Fun Video: What causes Tooth Decay or Cavities? Video Lecture - Science Class 7 (Old NCERT)

1. What causes tooth decay or cavities?

Ans. Tooth decay or cavities are primarily caused by the combination of bacteria in the mouth and a diet high in sugary and acidic foods. When we consume these foods, the bacteria in our mouth produce acids that attack the tooth enamel, leading to tooth decay.

2. How does bacteria contribute to tooth decay?

Ans. Bacteria in the mouth feed on the sugars and carbohydrates present in our food, producing acids as a byproduct. These acids attack the tooth enamel, breaking it down and causing tooth decay. The more bacteria and acid present in the mouth, the higher the risk of developing cavities.

3. What role does diet play in tooth decay?

Ans. Diet plays a significant role in tooth decay as it provides the fuel for bacteria to produce acids. Consuming a diet high in sugary and acidic foods, such as candies, sodas, and citrus fruits, increases the risk of tooth decay. It is important to limit the intake of these foods and maintain a balanced diet for good oral health.

4. Can poor oral hygiene contribute to tooth decay?

Ans. Yes, poor oral hygiene can contribute to tooth decay. When we do not brush and floss regularly, plaque accumulates on our teeth. Plaque is a sticky film containing bacteria that produce acids, leading to tooth decay. Proper oral hygiene, including brushing twice a day and flossing, helps remove plaque and prevent cavities.

5. How can cavities be prevented?

Ans. Cavities can be prevented by practicing good oral hygiene, including brushing your teeth at least twice a day with fluoride toothpaste, flossing daily, and visiting the dentist regularly for check-ups and cleanings. Additionally, reducing the consumption of sugary and acidic foods, and drinking fluoridated water can help protect against tooth decay.

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Oct 05, 2025 Last updated

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	Science Class 7 (Old NCERT) 112 videos\|286 docs\|28 tests

Science Class 7 (Old NCERT)

112 videos|286 docs|28 tests

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