Maxillary 2nd Molars (Ye's Version) Flashcards
Maxillary 2nd molars: General features
Crown is _______, _______, and more _______ than maxillary 1st molars.
- Smaller
- Shorter
- More Rhomboidal
Maxillary 2nd molars: Occlusal view
What are the 2 occlusal types for this tooth?
- Rhomboidal (resembles the 1st molar)
- Heart shaped (resembles the 3rd molar)
Maxillary 2nd molars: Occlusal view
What is the most common occlusal type?
Rhomboidal - most common
Maxillary 2nd molars:
Which cusp is smaller than the maxillary 1st molar?
DL cusp
Do maxillary 2nd molars have a cusp of carabelli?
NO
Maxillary 2nd molars: General features
Crown is _____ compared to 1st maxillary molar
Shorter
Maxillary 2nd molars: General features
Roots are as __________ or _________ and MORE _________ inclined compared to 1st maxillary molars.
LONG or AS LONG
and more DISTALLY inclined
What view and tooth?
Buccal; Maxillary 2nd molar
What view and tooth?
Lingual; Maxillary 2nd molar
What tooth & view?
Mesial; Maxillary 2nd molar
What tooth & view?
Distal; Maxillary 2nd molar
What tooth & view?
Maxillary 2nd Molar - Occlusal view
What tooth & view?
Maxillary 2nd Molar - Buccal view
What tooth & view?
Maxillary 2nd molar - Lingual view
What tooth & view?
Maxillary 2nd molar - Mesial view
What tooth & view?
Maxillary 2nd molar - Distal view
What tooth & view?
Maxillary 2nd molar - Occlusal view
Compared to Maxillary 1st molar, the maxillary 2nd molar: Buccal view
Crown is ______ and narrower in the ____ direction
Shorter; narrower M-D
Compared to Maxillary 1st molar, the maxillary 2nd molar: Buccal view
_____ cusp is smaller
DB
Compared to Maxillary 1st molar, the maxillary 2nd molar: Buccal view
Roots are more ________
Parallel
Compared to Maxillary 1st molar, the maxillary 2nd molar: Buccal view
Roots inclined to _______
Distal
Compared to Maxillary 1st molar, the maxillary 2nd molar: Buccal view
____ root apex is in line with buccal groove
MB
Compared to Maxillary 1st molar, the maxillary 2nd molar: Lingual view
____ cusp much smaller
DL
Compared to Maxillary 1st molar, the maxillary 2nd molar: Lingual view
Lingual root is inclined to the _______
Distal
Compared to Maxillary 1st molar, the maxillary 2nd molar: Lingual view
The apex of the lingual root lines up with the _____ cusp tip.
DL
Compared to Maxillary 1st molar, the maxillary 2nd molar: Lingual view
The apex of the lingual view lines up with the DL cusp tip. In the maxillary 1st molar, the apex lines up with the _________.
Lingual groove
Compared to Maxillary 1st molar, the maxillary 2nd molar: Mesial view
2nd molar has a _______ crown height
Shorter
Compared to Maxillary 1st molar, the maxillary 2nd molar: Mesial view
Which width is the same as the maxillary 1st molar?
BL
Compared to Maxillary 1st molar, the maxillary 2nd molar: Mesial view
Do the roots converge as much in 2nd maxillary molars?
NO; confined with crown width
Compared to Maxillary 1st molar, the maxillary 2nd molar: Mesial view
Contact area is in the _________ and offset to the _______
Middle 1/3 and buccal
Compared to Maxillary 1st molar, the maxillary 2nd molar: Distal view
Crown converges towards the ________
Distal
Compared to Maxillary 1st molar, the maxillary 2nd molar: Distal view
_____ & _____ cusps are smaller - much of the occlusal surface and _____ cusps are visible
DB
DL
ML
Compared to Maxillary 1st molar, the maxillary 2nd molar: Distal view
Contacts area is in the _________ and offset to the _______
Middle 1/3 and buccal
Compared to Maxillary 1st molar, the maxillary 2nd molar: Distal view
How many roots are visible?
3 roots
Compared to Maxillary 1st molar, the maxillary 2nd molar: Occlusal view
Max 2nd molar: More or less rhomboidal?
More Rhomboidal
Compared to Maxillary 1st molar, the maxillary 2nd molar: Occlusal view
B-L dimension ________ to maxillary 1st molar,
M-D is ______
Similar; smaller
Compared to Maxillary 1st molar, the maxillary 2nd molar: Occlusal view
____ and ____ cusps are less developed - tooth constricts toward the ______
DB and DL
Distal
Compared to Maxillary 1st molar, the maxillary 2nd molar: Occlusal view
Crown converges towards the ______
Lingual
Compared to Maxillary 1st molar, the maxillary 2nd molar: Occlusal view
(more/less) variable pit and groove anatomy?
MORE
Is there a cusp of carabelli on maxilary 2nd molars?
NO
Some maxillary 2nd molars do NOT have a _____ DL, which is called _______.
Heart-Shaped
Compared to Maxillary 1st molar, the maxillary 2nd molar: Occlusal view
The L, MB, and DB roots are (not as splayed/as splayed) splayed as they are in the maxillary 1st molar
NOT as splayed
L (13mm) > MB (12 mm) > DB (12mm)
Maxillary 2nd Molar: Roots
MB: ___ (most of the time)
DB: ___ canal(s)
Lingual: ___ canal(s)
MB: 1 canal (most of the time)
DB: 1 canal
Lingual: 1 canal
Maxillary 2nd molars: Proximal contacts
Mesial: ________________ offset to the ______
Distal: ________________ offset to the ______
Mesial: middle 1/3 offset to the buccal
Distal: middle 1/3 offset to the buccal
Maxillary 2nd molars: Height of Contour (HOC)
Buccal: _________
Lingual: _________
Buccal: Cervical 1/3
Lingual: Middle 1/3
