4th: Dental Anatomy and Physiology

Question 1

What is the full mammalian dental formula?

Answer 1

3-1-4-3

Question 2

How do dogs differ from the full mammalian formula?

Answer 2

No upper 3rd molar, upper 1st premolar has no deciduous precursor

Question 3

How many teeth do dogs have?

Answer 3

42

Question 4

How many teeth do cats have?

Answer 4

30

Question 5

How do cats differ from the full mammalian formula?

Answer 5

No 2nd or 3rd molar, no 1st premolar, no 2nd lower premolar

Question 6

What are the names for the 1st, 2nd and 3rd incisors?

Answer 6

Central, intermediate, lateral (corner in horses)

Question 7

Which are the carnassial teeth?

Answer 7

Upper P4, lower M1

Question 8

At what age do puppy teeth start to erupt?

Answer 8

3 weeks

Question 9

By what age do puppies have all their deciduous teeth?

Answer 9

6 weeks

Question 10

At what age do permanent teeth start to erupt?

Answer 10

3 months

Question 11

By what age have all the permanent teeth erupted in cats and dogs?

Answer 11

6 months

Question 12

At what age do kitten teeth erupt?

Answer 12

2 weeks

Question 13

What is carried within the apical delta?

Answer 13

Vessels, nerves, lymphatics

Question 14

What two structures does the periodontal ligament connect?

Answer 14

Alveolar bone to cementum

Question 15

What happens to odontoblasts following temperature change?

Answer 15

Shrink or swell - but brain can’t tell if they are hot or cold

Question 16

Which virus can cause tooth abnormalities?

Answer 16

Distemper

Question 17

What does enamel hypocalcification look like?

Answer 17

Picks up staining as doesn’t have a good crystalline structure

Question 18

In which body structures does tetracycline chelate?

Answer 18

Bone and teeth

Question 19

What are clinical signs of tetracycline chelation?

Answer 19

Discoloured dentine and enamel - only a cosmetic issue

Question 20

Below what age should you not use tetracycline?

Answer 20

4 months