Page 54 - Science class 4

± Use floss to clean between the teeth.

± Also clean the tongue to remove germs. Germs attack our teeth and also
cause bad breath.

± Avoid having too many sweets, sugary snacks or soft drinks.

± Eat food that is healthy for teeth and gums. Eat hard fruits like apples

whole instead of cutting them.

± Visit the dentist regularly for check-ups.

± Calcium is very important for strong teeth. We get it mainly from milk,
curd, cheese and other milk products.

± Eating salads protect our teeth from germs. Chewing fruits and salads

improves blood flow to the gums.

Quenching The Scientific Thirst
Quenching The Scientific Thirst
Quenching The Scientific ThirstQuenching The Scientific ThirstQuenching The Scientific ThirstQuenching The Scientific ThirstQuenching The Scientific Thirst
Quenching The Scientific ThirstQuenching The Scientific ThirstQuenching The Scientific ThirstQuenching The Scientific ThirstQuenching The Scientific Thirst
¤ Chewing gives an exercise to our gums and improves flow of blood

inside them.

¤ Four wisdom teeth grow at the back of the mouth from the age of
sixteen to twenty five.

Scientific Terms

Enamal : the hardest substance
Chew : to grind the food before swallowing

Cavities : an empty space inside something solid
Dentist : a doctor of teeth

Grind : to crush the food in small and thin particles

Permanent : lasting for a long time
Temporary : for a small period

Chapter at a Glance
³ We have two sets of teeth : temporary and permanent.

³ There are four types of teeth : incisors, canines, premolars and molars.
³ Our teeth help in biting and chewing the food.

³ A tooth has three parts : crown, neck and root.

³ Brushing and regular flossing keeps the teeth free from germs.