Mandibular 2nd molar arch traits Flashcards Preview

Tooth Morphology > Mandibular 2nd molar arch traits > Flashcards

Flashcards in Mandibular 2nd molar arch traits Deck (12):
1

at what age do they erupt?

11-13 years

2

at what age is the root completed?

14-15 years

3

what creates equal sized cusps?

the groove

4

root trunk length compared to 1st molar

is longer than the 1st molar

5

contacts from the lingual view

mesial: junction of occlusal and middle 1/3
distal: junction of occlusal and middle 1/3

6

are the cusps the same size from the lingual view?

yes

7

proximal surfaces compared to the 1st molar

they exhibit less convergence

8

what are the height of contours from the mesial view

buccal: cervical 1/3
lingual: middle 1/3

9

what is visible from the distal view?

the occlusal table because the DMR

10

how many cusps and what are they from the occlusal view?

MB, ML, DB, DL

11

is the buccal or lingual surface more visible from the occlusal view?

more buccal surface

12

What shape do the grooves make?

a + sign and it is the only tooth to do this