Digestion Flashcards
1
Q
Structure of a tooth includes
A
- Enamel
- Gum
- Pulp cavity
- Dentine
- Cement
- Nerves
- Crown
- Root
2
Q
Enamel
A
Hardest substance in the body, covers crown of tooth and protects
3
Q
Gum
A
Living tissue that covers jaw bone and helps hold tooth in placxe
4
Q
Pulp cavity
A
Living tissue containing nerves and blood vessels
5
Q
Dentine
A
Hard substance –> protects and covers pulp, bulk of tooth
6
Q
Cement
A
Anchors root of tooth into jaw bone
7
Q
Nerves
A
Keep tooth alive, sense pain from tooth decay
8
Q
What is dental decay
A
Tooth decay begins when bacteria in your mouth make acids that attack the tooth’s surface (enamel).
This can lead to a small hole in a tooth, called a cavity.
If tooth decay is not treated, it can cause pain, infection, and even tooth loss.
9
Q
Steps of dental decay
A
- Bacteria in mouth
- It feeds on sugars and food remains
- produces acid and a waste product
- PH falls to about 5
- Acid begins to dissolve the enamel
- Saliva will neutralise the acid
- Acid may dissolve to dentine
- Plaque is a mixture of bacteria and food remains
10
Q
Ways dental decay can be prevented
A
- Regular flossing/brushing
- Mouthwash
- Floss
- Less sugary foods
