molars Flashcards
what are depressions on the occlusal surface of molars known as?
fossae
how many roots does an upper 1st molar have?
3
which way does the single divergent root of an upper 1st molar point?
palatal
which cusp is the largest on an upper 1st molar?
mesio-palatal
are upper 1st molars wider cheek to palate or mesio-distally?
cheek-palate
how many cusps does an upper 1st molar have?
4
which cusps on an upper 1st molar is smallest?
disto-lingual
how many buccal roots does an upper 1st molar have?
2
what is the name of a 5th cusp found only on upper 1st molars?
cusp of carabelli
where on an upper 1st molar is the cusp of carabelli found?
mesio-palatal
compare the disto-palatal cusp of a 1st and second upper molar
the ditto-palatal cusp of an upper 1st molar is relatively big compared to upper 2nd
why is the upper 2nd molar more triangle than the diamond shaped upper 1st molar?
reduced disto-palatal cusp or absent disco-palatal cusp
compare the palatal root of a 1st and second upper molar
2nd palatal root less divergent
how many roots does an upper 2nd molar have?
3
how many cusps does an upper 2nd molar have?
4
how many cusps does a lower 1st molar have?
5
how many buccal cups does a lower 1st molar have?
3
how many lingual cups does a lower 1st molar have?
2
which surface of a lower 1st molar, buccal or lingual, is largest?
buccal
which two surfaces of a lower 1st molar are the roots on?
mesial and distal
how many roots do lower molars have
2
which of the 2 roots of a lower 1st molar is curved?
mesial
what surface of a lower 1st molar, mesial or distal, is the small additional 5th cusp on?
distal
why does the buccal surface of the lower 1st molar have an increased risk of caries?
it has a pit
com pare the lower 1st and 2nd molars?
lower 2nd is more symmetrical and smaller, 2nd has 4 cusps
how many cusps does a lower 2nd molar have?
4
which molar has a ‘+’ shaped fissure pattern?
lower 2nd molar
which molar has a ‘H’ shaped fissure pattern?
upper 1st molar
which tooth has a pit on the buccal surface, with an increased risk of caries?
lower 6