2. Teeth
Teeth are used to break down food
into pieces that are small enough
to swallow.
3. Types of teeth
Incisors
At the front of
the mouth, they
cut food.
Canines
Sharp pointed
teeth next to the
insciso.rs.
They tear and
hold food
Molars:
Flat wide
teeth at the
back of the
mouth .They
grind and
chew food.
4.
5. How do our teeth develop?
Humans have two sets of teeth in their life:
1)Milk (baby) teeth:
A child who has four
years old has milk
teeth .At the age of
six or seven
,permanent new teeth
start to grow.
2)Permanent (adult)
teeth:
An adult can grow up
32 permanent teeth. If
you lose a permanent
teeth, a new one does
not grow.
7. Tooth layers
When bacteria reaches our pulp chamber it
hurts and by then the teeth is damaged.
Enamel
Dentin
Pulp chamber
8. What should you do to look after
your teeth?
Brushing with toothpaste twice a day removes
plaque. Plaque is a mixture of food particles
and tiny organisms called bacteria . The
bacteria with the plaque causes tooth decay.
10. Keeping you teeth healthy
1)Brush your teeth twice a day.
2)Use fluoride toothpaste to make your teeth
stronger.
3)Eat less sugary food.
4)Go to the dentist twice a year.
