Molars

Question 1

Aside from mastication, supporting cheeks, and keeping the tongue continued within the arches, what is the other function unique to molars?

Answer 1

maintenance of vertical dimension

Question 2

Which molars are the shortest teeth in the mouth? (max or mand?)

Answer 2

mandibular!

Question 3

True or False.
Aside from molars being the shortest teeth occlusocervically, they are generally larger in every dimension than other teeth.

Answer 3

True.

Question 4

True or false.

All molars from the buccal view have a distal to mesial taper.

Answer 4

False!

All molars have a mesial to distal taper.

Question 5

Crowns of molars get ____ as you move mesiodistally.

Answer 5

smaller.

Question 6

the buccal HOC is in the ____ third, the lingual HOC is in the ____ third.

Answer 6

buccal HOC- cervical

lingual HOC- middle third

Question 7

Which two molars are likely to have 5 cusps?

Answer 7

Maxillary 1st and Mandibular 1st molars.

Question 8

Which molar would have a lingual to buccal taper?

What cusp causes this?

Answer 8

Maxillary 1st molar. because of large distolingual cusp…

Question 9

Which two teeth could exhibit a lingual divergence?

Answer 9

Maxillary 1st molars and mandibular 2nd premolars (3 cusp type)

Question 10

All molars except the maxillary 1st molar exhibit a ___ to ___ taper.

Answer 10

buccal to lingual taper

Question 11

Maxillary molars are wider in the _____ dimension then the ____ dimension.

(occlusal view)

Answer 11

wider in the faciolingual dimension than the mesiodistal dimension.

Question 12

True or False.

The maxillary 1st molar has a shorter root trunk than the maxillary 2nd molar.

Answer 12

True, Maxillary 2nd molar has a LONGER root trunk.

Question 13

As you move posteriorly which cusp gets progressively smaller on maxillary molars?

Answer 13

distolingual cusp

Question 14

Mandibular molars are wider in the ____ dimension than the ____ dimension.

(occlusal view)

Answer 14

wider in the mesiodistal dimension than the buccolingual dimension.

Question 15

on mandibular 1st molars you would have _ buccal cusps and _ lingual cusps.

Answer 15

3 buccal cusps, 2 lingual

Question 16

Maxillary molars typically have _ roots, while mandibular molars have ___ roots.

Answer 16

3 roots=max

2- mand

Question 17

Where would the furcations be on maxillary molars?

Answer 17

buccal, mesial and distal

Question 18

where would the furcation be on mandibular molars?

Answer 18

buccal and lingual

Question 19

Only ____ molars have oblique ridges.

Answer 19

maxillary molars

would have oblique ridges extending from the mesiolingual to the distobuccal cusps

Question 20

Roots get (taller or shorter ) and (more or less divergent) as you move posteriorly ?

Answer 20

Roots get shorter and less divergent as you move posteriorly.

Question 21

The tallest root on maxillary molars is the?

Answer 21

palatal/ lingual root

Question 22

the smallest root on the maxillary molars is the?

Answer 22

distalbuccal root

Question 23

which molars would exhibit a lingual tilt and requiring you to align the bur perpendicular to the occlusal surface?

Answer 23

mandibular molars (also seen in mandibular premolars )

Question 24

which root in longer, wider, and more curved on mandibular molars?

Answer 24

mesial root.

Question 25

would 1st of 2nd molar roots be MORE distally inclined ?

Answer 25

2nd molars roots would be more distally inclined than 1st. | would also be LESS divergent

Question 26

nonsuccadaneous teeth are?

Answer 26

Permanent Max/mand molars

Question 27

Which teeth have the greatest variability in form? Which teeth have second greatest variability?

Answer 27

1st- 3rd molars 2nd- maxillary lateral incisors

Question 28

Oblique ridges found on the maxillary molars would be formed from the union of the ___ ____ ___ of the mesiolingual cusp and then ____ ____ of the distobuccal cusp.

Answer 28

distal cusp ridge of the mesiolingual cusp and the triangular ridge of the distobuccal cusp

Question 29

How many roots are visible from the buccal aspect of maxillary first molars?

Answer 29

3

Question 30

Which tooth has the greatest morphological variance ?

Answer 30

Maxillary 3rd molars.

Question 31

Which tooth in the mouth would have a mesiolingual developmental groove?

Answer 31

mandibular 1st premolars.

Question 32

Which teeth would have prominent labial ridges?

Answer 32

Canines

Question 33

Which molars is the most symmetrical ?

Answer 33

mandibular second molar

Question 34

Which root of a maxillary 1st molar commonly has two root canals?

Answer 34

mesiobuccal root

Question 35

Maxillary 1st molars: the mesiobuccal cusp ridges meets at an ___ angle, and the distobuccal cusp ridges meets at an ____ angle.

Answer 35

mesiobuccal= obtuse angle distobuccal- acute angle

Question 36

Name the cusp in order from largest to smallest on the maxillary 1st molars.

Answer 36

Mesiolingual mesiobuccal distobuccal distolingual cusp of carabelli

Question 37

what are the two obtuse angles of the rhomboid shaped maxillary 1st molars? two acute?

Answer 37

mesiolingual and distobuccal =obtuse mesiobuccal and distolingual =acute

Question 38

which root is longer and more curved on mandibular molars? | and often has two root canals

Answer 38

mesial root

Question 39

which is the widest of the 3 buccal cusps on mandibular 1st molars?

Answer 39

mesiobuccal cusp

Question 40

mandibular 1st molars: which of the two buccal grooves is shorter and often extends to the middle of the crown and end in a pit/depression?

Answer 40

mesiobuccal groove.

Question 41

Name the cusps from largest to smallest of the mandibular 1st molars.

Answer 41

Mesiobuccal mesiolingual=distolingual distobuccal distal

Question 42

which two cusp on mandibular 1st molars are similar in size?

Answer 42

mesiolingual and distolingual | both lingual cusps are the same size

Question 43

which molar would you find a cervical ridge that is not as prominent of the buccal bulge of primary teeth?

Answer 43

mandibular 1st molar

Question 44

on what tooth and what cusp would you likely find the cusp of carabelli?

Answer 44

maxillary 1st molars, on the mesiolingual cusp

Question 45

which cusps are taller (lingual or buccal) on mandibular molars?

Answer 45

lingual cusps are taller...

Question 46

maxillary 1st molars: The (lingual or buccal) groove be parallel to the long axis of the distobuccal root?' The (lingual or buccal) groove often begins as an extension of the distal oblique ridge and ends in a pit.

Answer 46

buccal groove is parallel to the long axis of the distobuccal root. lingual groove often begins as an extension of the distal oblique ridge and ends in a pit..

Question 47

Maxillary 1st molars: the apex of which root lines up with the occlusal tip of the lingual groove?

Answer 47

palatal root

Question 48

what is the occlusal shape of maxillary 1st molars?

Answer 48

rhomboidal

Question 49

what is the occlusal shape of mandibular 1st molars?

Answer 49

hexagonal

Question 50

what is the occlusal shape of maxillary 2nd and 3rd molars?

Answer 50

rhomboidal or heart shaped (depending on size of distolingual cusp)

Question 51

what is the occlusal shape of mandibular 2nd molars?

Answer 51

rectangular, due to all the cusps being almost the same size.

Question 52

On maxillary 1st and 2nd molars, what three cusps would form the primary cusp triangle (aka trigon?)

Answer 52

mesiolingual, mesiobuccal, and distobuccal

Question 53

on which molars would you expect to see every cusp with a triangular ridge but none meeting in a transverse ridge?

Answer 53

mandibular 1st molars

Question 54

on which molars would you espect to see every cusp with a triangular ridge and they form 2 transverse ridges?

Answer 54

mandibular 2nd molars

Question 55

what are the major fossa of maxillary 1st molars? minor ?

Answer 55

central (largest) and distal minor= mesial and distal triangular fossa

Question 56

what are the major fossa mandibular 1st molars? minor?

Answer 56

central only. minor= mesial and distal triangular fossa

Question 57

which maxillary molar would have the most secondary grooves?

Answer 57

max 3rd molars

Question 58

how many groove are visible on maxillary 1st molars?

Answer 58

7.

Question 59

how could you describe the central groove on mandibular 1st molars? what 3 grooves would form a Y shape?

Answer 59

M or W shaped.=central groove mesiobuccal, distobuccal and lingual grooves= Y shape

Question 60

how many grooves would you find on mandibular 2nd molars?

Answer 60

3, lingual groove, buccal groove (often ends in pit), and central groove

Question 61

the ____ crown is covered with enamel and may change due to attrition/trauma.

Answer 61

anatomical crown

Question 62

the ___ crown is the amount of tooth visible due to gingival level, eruption, and wear.

Answer 62

clinical crown.

Question 63

the ___ root is the area of root embedded in the alveolar bone.

Answer 63

clinical root.

Question 64

the ___ root is the area of root covered by cementum

Answer 64

anatomical root.