lower permanent molars

Question 1

lower molars have 4 cusps what are they? (lower 36 & 46 have a 5th)

Answer 1

They have 4 principal cusps: mesiobuccal, mesiolingual, distobuccal, distolingual,

Question 2

what way do the fissures run in lower permanent molars?

Answer 2

Fissures run mesio-distally and bucco-lingually.

Question 3

how many roots does a lower permanent molar have ? and what are they?

Answer 3

2 roots. One mesially and one distally.

Question 4

what is the 5th cusp present on the lower 36 & 46 called?

Answer 4

distal cusp

Question 5

pulp morphology for lower permanent molar

Answer 5

Pulp horns follow outline of cusp tips
Wider mesiodistally than buccolingually
5 pulp horns projecting into cusps

Question 6

what age does the lower first permanent molar root complete?

Answer 6

9-10 years.

Question 6

what age does the lower first permanent molar erupt?

Answer 6

6-7 years.

Question 7

when does the calcification complete of the lower second molar

Answer 7

2-3 years.

Question 8

how many cusps does the lower second permanent molar have?

Answer 8

4 cusps

Question 9

when does the lower second molar erupt?

Answer 9

11-13 years.

Question 10

when does the root complete of the lower second permanent molar?

Answer 10

14-15

Question 11

how many roots does the lower third permanent molar have?

Answer 11

2 roots often fused

Question 12

pulp morphology of the lower permanent molar

Answer 12

They usually have 4 pulp horns and 2-3 pulp canals

Question 13

what age does the lower third permanent molar erupt?

Answer 13

17-21 but varies

Question 14

what age does the lower third permanent molar root complete?

Answer 14

18-25 years

Question 15

what age does the lower third permanent molar calcify?

Answer 15

8-10 years