Maxillary 1st Pre-molar Arch Traits Flashcards Preview

Tooth Morphology > Maxillary 1st Pre-molar Arch Traits > Flashcards

Flashcards in Maxillary 1st Pre-molar Arch Traits Deck (17):
1

At what age do they erupt?

10-11 years

2

At what age is the root completed?

12-13 years

3

Which cusp is bigger and by how much?

Buccal > Lingual by 1 mm

4

How many roots?

2 and bifurcation level varies

5

Function of these teeth?

grinding

6

What are the most common extraction for?

orthodontics

7

From the buccal view what are the mesial and distal contacts?

Both are in the middle 1/3 but the distal contact is more occlusal than mesial

8

Which cusp ridge is bigger?

MCR>DCR

9

CEJ shape from buccal view

slight curve

10

Which way do the roots incline?

lingual root inclines distally
buccal root inclines lingually

11

Crow tapers in which direction from the lingual view?

towards lingual

12

CEJ shape from lingual view

nearly straight

13

What space is ideal for calculus formation?

Mesial Proximal concavity

14

from the mesial view which cusp is bigger?

B>L

15

CEJ shape from distal view

straight line

16

Height of contour from Distal view

Buccal: Cervical 1/3
Lingual: Middle 1/3

17

Is the central developmental groove longer than the second pre-molar?

yes