Permanent teeth

Question 1

1.

Answer 1

total set of 32, 16 in each jaw

Question 2

2.

Answer 2

they begin developing in jaws just before birth, + continue for many years after

Question 3

3.

Answer 3

they are reared to in dentistry by number - 1 2 3 4 5 6 7 8 - starting from midline of jaw

Question 4

4.

Answer 4

very similar morphology to deciduous teeth, with eight extra teeth called premolars present, two in each jaw

Question 5

5.

Answer 5

they are larger in size + darker in colour, than deciduous teeth with relatively smaller pulp chambers

Question 6

6.

Answer 6

the three permanent molar teeth in each quadrant develop behind the deciduous teeth, using the space created as the jaws grow + develop during childhood + teenage years

Question 7

7.

Answer 7

It is relatively common for some adult teeth to be congenitally missing from the dentition, especially third molars

Question 8

8.

Answer 8

they begin erupting at around 6 years + all except third molars are usually present by age 13

Question 9

9.

Answer 9

the third molars may be congenitally missing, present but unerupted due to lack of jaw space, or they may erupt from age 18 onwards

Question 10

10

Answer 10

the eight permanent teeth present in each quadrant are central + lateral incisors, canine, first + second premolars, first, second + third molars

Question 11

11.

Answer 11

Permanent teeth erupt before their roots are fully grown, about two thirds of their root length has formed + the apex is still wide open

Question 12

12.

Answer 12

it takes another 3 years before root growth is complete + the apex closes. the only exceptions are canines + third molars which do not erupt until root growth is complete