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Mandibular Posterior Teeth Flashcards

(64 cards)

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1
Q

Which buccal cusp ridge is shorter for mandibular 1st premolar?

A

Mesial

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2
Q

How would you describe middle buccal lobe of mandibular 1st premolar?

A

Well developed

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3
Q

How would you describe buccal cusp of mandibular 1st premolar?

A

Large
Pointed
Offset to mesial

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4
Q

Which anterior tooth does mandibular 1st premolar resemble?

A

Mandibular canine

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5
Q

Curvature of which contact area is wider for mandibular 1st premolar?

A

Distal

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6
Q

Buccal surface of maxillary posterior teeth more convex at middle 3rd than mandibular posterior teeth. True/False?

A

False

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7
Q

Is lingual cusp of mandibular 1st premolar short & less developed?

A

Yes

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8
Q

Identification feature of mandibular 1st premolar

A

Mesiolingual developmental groove

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9
Q

What is the characteristic shape of all mandibular posterior teeth from mesial & distal aspect?

A

Roughly rhomboidal crown

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10
Q

Buccal cusp of all A posterior teeth are little B to center.

A

A: mandibular
B: buccal

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11
Q

Buccal outline of mandibular 1st premolar less convex than lingual outline. True/False?

A

False

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12
Q

Where is crest of curvature of buccal & lingual surfaces of mandibular 1st premolar located?

A

Middle 3rd

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13
Q

Which aspect has deeper developmental depression for mandibular 1st premolar - mesial or distal?

A

Mesial

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14
Q

For mandibular 1st premolar, which contact area is broader?

A

Distal

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15
Q

For all posterior teeth, is curvature of cervical line straighter mesially or distally?

A

Distally

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16
Q

For mandibular 1st premolar, which side of root has deeper developmental depression - mesial or distal?

A

Mesial

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17
Q

Maxillary premolars exhibit more variations in form occlusally than do mandibular premolars. True/False?

A

False

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18
Q

What is shape of buccal aspect of mandibular 1st premolar?

A

Roughly trapezoidal

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19
Q

What is shape of occlusal aspect of mandibular 1st premolar?

A

Roughly diamond-shaped but varies

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20
Q

For mandibular 1st premolar, A triangular ridge is bigger than that of B.

A

A: buccal
B: lingual

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21
Q

Mesial fossa of mandibular 1st premolar is more ___ than that of distal.

A

Linear

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22
Q

Mandibular 2nd premolar has ___ buccal cusp than mandibular 1st premolar.

A

Shorter

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23
Q

Crown of which is more rounded - mandibular 1st/2nd premolar?

A

2nd

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24
Q

Which buccal cusp ridge is shorter for mandibular 2nd premolar?

Hint: same as mandibular 1st premolar

A

Mesial

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25
Lingual lobes of mandibular 2nd premolar are _A_ developed than mandibular 1st premolar. Hence, lingual cusp(s) are _B_. Since lingual cusp(s) are _B_, _C_ of the occlusal surface can be seen lingually.
A: more B: longer C: less
26
Lingual cusp(s) of mandibular 2nd premolar is/are longer than buccal cusp. True/False?
False
27
In 3-cusp type mandibular 2nd premolar, which cusp is larger & longer - mesiolingual/distolingual cusp?
Mesiolingual
28
Crown of mandibular 2nd premolar tapers ___ lingually than mandibular 1st premolar.
Less
29
Which mandibular premolar is larger overall?
2nd
30
Mesial marginal ridge for mandibular 2nd premolar (slopes lingually/is at right angles to long axis of tooth).
Is at right angles to long axis of tooth
31
The distal marginal ridge of mandibular 2nd premolar is at a _A_ level than that of mesial. Hence, _B_ of the occlusal surface may be seen. Hint: opposite of mandibular 1st premolar
A: lower B: more
32
Shape of 3-cusp type mandibular 2nd premolar lingual to buccal cusp ridge
Square
33
Shape of 2-cusp type mandibular 2nd premolar lingual to buccal cusp ridge
Circle
34
Arrange - in ascending order - cusps of 3-cusp type mandibular 2nd premolar according to size
Distolingual cusp, mesiolingual cusp, buccal cusp
35
For 3-cusp type mandibular 2nd premolar, developmental groove separating triangular ridge of each cusp converge in a central _A_ & form a _B_ shape on occlusal surface.
A: pit B: Y
36
How would you describe shape of mandibular 1st molar from buccal aspect?
Roughly trapezoidal
37
Name cusps of mandibular 1st molar which can be seen buccally
Mesiobuccal, distobuccal, distal, mesiolingual & distolingual
38
Name the 2 developmental grooves of mandibular 1st molar which can be seen buccally
Mesiobuccal & distobuccal
39
Distal cusp of mandibular 1st molar, which is small, is ___ pointed than either of the buccal cusps.
More
40
___ cusp of mandibular 1st molar is widest cusp mesiodistally seen buccally.
Mesiobuccal
41
For mandibular 1st molar, approx. level of ends of developmental grooves, at middle 3rd, a developmental _A_ which runs _B_ above _C_ is noticeable.
A: depression B: mesiodistally C: cervical ridge
42
For mandibular 1st molar, name cusps seen lingually
Mesiolingual, distolingual & distal
43
For mandibular 1st molar, which is widest mesiodistally & higher - mesiolingual or distolingual cusp?
Mesiolingual
44
Compared to mandibular 2nd premolar, mandibular 1st molar is shorter although wider buccolingually. True/False?
True
45
For mandibular 1st molar, lingual cusp ___ than buccal cusp. Hint: opposite of 2nd premolar
Longer
46
For mandibular 1st molar, why more of tooth is seen from distal aspect?
1. Buccal & lingual surfaces of crown converge distally 2. Distal root narrower buccolingually 3. Crown placed on root w/ distal inclination to long axis
47
Mandibular 1st molar fatter but shorter than mandibular 2nd premolar. True/False?
True
48
What is shape of mandibular 1st molar from occlusal aspect?
Roughly hexagonal
49
For mandibular 1st molar, is the crown wider mesiodistally or buccolingually? Hint: opposite of maxillary 1st molar
Mesiodistally
50
For mandibular 1st molar, is buccolingual measurement of crown from occlusal aspect greater mesially or distally?
Mesially
51
Arrange in descending order size of cusps of mandibular 1st molar
Mesiobuccal, linguals, distobuccal, distal
52
From developmental viewpoint, all mandibular molars have 4 major cusps, whereas maxillary molars have only 3 major cusps. True/False?
True
53
Name 3 major fossae on occlusal surface of mandibular 1st molar
Central, mesial triangular, distal triangular
54
Name developmental grooves on occlusal surface of mandibular 1st molar
Central, lingual, mesiobuccal & distobuccal
55
All developmental grooves of mandibular 1st molar converge in center of central fossa at ___.
Central pit
56
For mandibular 1st molar, distal triangular fossa often ___ distinct.
More
57
For mandibular 1st molar, buccal & lingual supplemental grooves are ___ common at distal triangular fossa.
More
58
Which is shorter cervico-occlusally & narrower mesiodistally - mandibular 1st or 2nd molar?
2nd
59
How many developmental groove(s) on buccal aspect of mandibular 2nd molar? Name it/them.
1 called buccal developmental groove
60
For mandibular 2nd molar, if part of distal root is in sight mesially, it's seen ___. Hint: opposite of mandibular 1st molar
Buccally
61
How many cusp(s) does mandibular 2nd molar have?
4
62
What is/are differences between mandibular 1st & 2nd molar from distal aspect?
Mandibular 2nd molar doesn't have distal cusp & distobuccal developmental groove
63
Buccal & lingual developmental grooves of mandibular 2nd molar meet central developmental groove at ___ ___ at central pit on occlusal surface.
Right angles
64
Shape of mandibular 2nd molar from occlusal aspect
Rectangular

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