Maxillary 1st Molar Arch Traits Flashcards Preview

Tooth Morphology > Maxillary 1st Molar Arch Traits > Flashcards

Flashcards in Maxillary 1st Molar Arch Traits Deck (16):
1

at what age do they erupt?

6-7 years

2

at what age is the root completed?

9-10 years

3

how many cusps and are they the same size?

2 cusps and they are the same size

4

Contacts from the buccal view

Mesial: junction of middle and occlusal 1/3
Distal: middle 1/3

5

CEJ shape from buccal view

slight curve, irregular

6

How many roots and in what location?

3
MB, DB, and Lingual or Palatal root

7

From the lingual view how many cusps are visible?

2
ML>DL

8

What is the cusp of carabelli

5th cusp and comes off ML cusp

9

CEJ shape

straight

10

The lingual root is wide in which direction?

Mesio-Distal

11

From the mesial view what is the HOC

Buccal and Lingual both in the cervial 1/3

12

Where is the furcation located from the mesial view?

between the MB and palatal root

13

Why is the buccal surface visible from the distal view?

because of the lingual pull of the DB cusp

14

the DMR is more apical revealing what from the distal view?

the occlusal table

15

what makes up the trigon?

ML, MB, and DB cusps

16

what variations can be present?

cusp of carabelli present or not
size of DL cusp