Teeth and food guide pyramidLife sciences

Teeth

Teeth are used to break down food into pieces that are small enough to swallow.

Types of teeth

IncisorsAt the front of

the mouth, they cut food.

CaninesSharp 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.

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.

Milk teeth

Permanent teeth

Tooth layers When bacteria reaches our pulp

chamber it hurts and by then the teeth is damaged.

Enamel Dentin

Pulp chamber

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.

A decaying toothSugar + bacteria

Plaque + acid

Tooth decay

Keeping you teeth healthy1)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.