Maxillary 1st Molar Arch Traits Flashcards
at what age do they erupt?
6-7 years
at what age is the root completed?
9-10 years
how many cusps and are they the same size?
2 cusps and they are the same size
Contacts from the buccal view
Mesial: junction of middle and occlusal 1/3
Distal: middle 1/3
CEJ shape from buccal view
slight curve, irregular
How many roots and in what location?
3
MB, DB, and Lingual or Palatal root
From the lingual view how many cusps are visible?
2
ML>DL
What is the cusp of carabelli
5th cusp and comes off ML cusp
CEJ shape
straight
The lingual root is wide in which direction?
Mesio-Distal
From the mesial view what is the HOC
Buccal and Lingual both in the cervial 1/3
Where is the furcation located from the mesial view?
between the MB and palatal root
Why is the buccal surface visible from the distal view?
because of the lingual pull of the DB cusp
the DMR is more apical revealing what from the distal view?
the occlusal table
what makes up the trigon?
ML, MB, and DB cusps
