Teeth

Question 1

What processes do they help with?

Answer 1

Ingestion and chemical digestion

Question 2

What are they used for? Why does it help?

Answer 2

Bite, chop, crush and grind food, creates a larger surface area

Question 3

What is the top and bottom part of the tooth?

Answer 3

Crown, root

Question 4

What is the hardest substance in the body?

Answer 4

The enamel

Question 5

What does the pulp cavity contain?

Answer 5

Nerves, blood vessels

Question 6

What are the nerves in teeth for?

Answer 6

detect heat, cold and pain

Question 7

What are the blood vessels in teeth for?

Answer 7

Supply oxygen and nutrients to the tooth

Question 8

What does dentine contain and what are they surrounded by?

Answer 8

Living cells surrounded by calcium

Question 9

What is the function of the cement?

Answer 9

Covers the root

Question 10

What are the fibres for?

Answer 10

To attach the tooth to the jawbone

Question 11

4 types of teeth and amount of each

Answer 11

8 Incisors, 4 canines, 8 premolars, 12 molars

Question 12

What are the incisors for?

Answer 12

Biting

Question 13

What are the canines for?

Answer 13

In animals-hunting In humans-used as incisors

Question 14

What are premolars and molars for?

Answer 14

Chewing, grinding

Question 15

What are the molars at the back of your mouth called?

Answer 15

Wisdom teeth

Question 16

How many sets of teeth do we have in our lives? What are their names?

Answer 16

2, milk/deciduous teeth, permanent teeth

Question 17

How many permanent teeth do we have?

Answer 17

32

Question 18

At what age do milk teeth start coming in? How many are there?

Answer 18

18-20 months, 20

Question 19

What are tooth decay and gum disease caused by?

Answer 19

Bacteria

Question 20

What is plaque made of?

Answer 20

Mixture of food and bacteria

Question 21

What happens if plaque isn’t removed quick enough?

Answer 21

It becomes hard and turns into tartar

Question 22

What is gum disease?

Answer 22

1. Plaque builds up around edges of teeth and gums
2. If the plaque is not removed, bacteria may infect the gums and work down to the root of the tooth
3. The gums swell, become inflamed and bleed, tooth becomes loose and may fall out or need removing

Question 23

What happens during tooth decay?

Answer 23

1. Acid makes a hole in the enamel, caused by bacteria eating sugar and excreting acid
2. This allows bacteria to get into the pulp cavity
3. When bacteria reaches the nerves it leads to toothache

Question 24

What happens in severe cases of tooth decay?

Answer 24

The bacteria spreads to the base of the tooth and leads to painful swelling known as an abcess

Question 25

How can tooth decay be prevented?

Answer 25

1. Don’t eat to much sugar
2. Clean teeth regularly-at least twice a day
3. Use toothpaste containing flouride
4. Visit dentist regularly-2 times a year
5. Eat;
   calcium-makes teeth stronger
   vitamin C-fruit and vegetables help teeth grow and protect our gums
   Apples-clean teeth
   Raw carrots-make teeth strong