300 Dental Anat Facts Max 2nd-md 2nd Premolars Flashcards
Which tooth has cusps that are almost identical to the 1st maxillary premolar?
mx 2nd premolar
Does the 2nd max premolar has 2 cusps that are of equal or unequal height?
equal.
what POSTERIOR tooth is most symmetrical?
max 2nd premolar
*Mand centrals are the most symmetrical overall
which tooth has a short central groove, and lots of supplemental groves making it appear “wrinkly”?
max 2nd premolar
Which tooth has 2 fossa that are closest in size compared to other posterior teeth?
max 2nd premolar
which tooth has a prominent triangular ridge, eliminating a a central groove?
Md 1st premolar
*look like snake eyes
the mesio-lingual developmental groove on the mandibular 1st premolar originates from where?
occlusal pit and extends into the proximal surface
- *groove enables you to tell which side is mesial/distal when viewed occlusally
- only tooth that has this groove
Because of the mesio-lingual groove on the md 1st premolar, what angle does the mesial marginal ridge make?
45 degrees
what shape does the md 1st premolar make from the occlusal view?
diamond
if the md 1st premolar has a second canal, where is it likely to be located?
lingual
how many pulp horns does the md 1st premolar have?
one
The lingual cusp of the md 1st premolars is how many thirds the size of the the facial cusp?
2/3 of the crown height of the buccal cusp
which tooth has a lingual cusp that is similar in development to a canine?
md 1st premolar
Does the lingual cusp of md 1st premolar normally occlude?
no
what tooth has the most variation of all posterior teeth in facial vs lingual cusp height?
md 1st premolar
which tooth has the narrowest attached gingiva (masticatory mucosa) on the facial?
md 1st premolar
What POSTERIOR tooth is the smallest facio-lingually?
md 1st premolar
Which tooth is closest of all mandibular teeth F-L and M-D
md 1st premolar
what shape is the coronal outline of the mandibular 2nd premolar?
pentagonal
*different from occlusal table
what shape is the occlusal table of the mandibular 2nd premolar?
rectangular
*Different coronal outline
which tooth is most likely to have a crescent or C shapped central groove?
md 2nd premolar
where is the shortest interdental papilla located?
between mandibular 2nd premolar and 1st molar
In a Y shaped md premolar, where are the cusps?
1 facial, 2 lingual
how many occlusal pits does a Y shaped md 2nd premolar have?
3
*same as mx 1st molar
what premolar is the only one to have 2 lingual cusps?
md 2nd premolar
which premolar has a lingual groove?
md 2nd premolar
*part of the Y
which premolar has a central fossa?
md 2nd premolar
what is the most congenitally missing premolar?
md 2nd premolar
