Teeth Flashcards
Name the types of teeth
Incisor canine molar premolar
What’s the incisors use
Biting off food
What’s the canines use
Stabbing and holding prey
What’s the molars use
Grinding
What’s the premolars use
Grinding
What’s the hard outer layer called
Enamel
What’s after the hard outer layer
Cement and fibres
What’s after the layer in-between the hard outer layer and the
Dentine
What’s the centre called
Pulp cavity
What’s in the centre
Blood capillaries and nerves
What’s om the outside of every tooth
Gum
What group are the only vertebrate group with differentiated teeth
Mammals
What is the hardest substance in the body
Enamel
What forms the bulk of the tooth and decays easily
Dentine
What contains nerves and blood vessels to let teeth grow
Pulp cavity
What hold the tooth in place
Cement and fibres
What are the first set of teeth called
Milk teeth
How many teeth altogether are in an adults mouth
32
What causes tooth decay
Bacteria in the mouth
What do the bacteria form a layer of on the tooth
Plaque
What do thr bacteria do after a meal
Use up the sugar and produce acid
What can’t saliva do
Saliva is slightly alkaline but can’t neutralise the acid quick enough to prevent decay
What does the acid do gradually
Eat into the enamel and dentine causing holes
What do the acid eventually reach
The pulp cavity allowing bacteria to get inside the tooth causing toothache
