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Morpho > Lecture 7 Maxillary First Molar > Flashcards

Lecture 7 Maxillary First Molar Flashcards

1
Q

When does the maxillary first molar typically erupt?
• A) 6 years
• B) 8 years
• C) 10 years
• D) 12 years

A

A) 6 years

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2
Q

What shape is the crown of the maxillary first molar?
• A) Cuboidal
• B) Cylindrical
• C) Triangular
• D) Oval

A

A) Cuboidal

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3
Q

In the buccal aspect of the maxillary first molar, what is the shape of the occlusal outline?
• A) W shape
• B) Circular
• C) Rectangular
• D) Trapezoidal

A

A) W shape

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4
Q

How many cusps does the maxillary first molar have, and which cusp is the largest?
• A) 4 cusps, ML is the largest
• B) 3 cusps, MB is the largest
• C) 5 cusps, DB is the largest
• D) 4 cusps, DL is the largest

A

A) 4 cusps, ML is the largest

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5
Q

Which groove on the occlusal aspect of the maxillary first molar runs from the central fossa to the mesial fossa?
• A) Centro-buccal groove
• B) Disto-lingual groove
• C) Mesio-central groove
• D) Central groove

A

C) Mesio-central groove

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6
Q

What is a distinguishing feature of the maxillary first molar’s pulp chamber?
•A) It has 2 pulpal horns.
•B) It is voluminous with 4 pulpal horns.
•C) It has no pulpal horns.
•D) It contains 3 root canals.

A

B) it is voluminous with 4 pulpal horns

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7
Q

Which root of the maxillary first molar is described as having a flattened buccolingual dimension?
• A) Buccal root
• B) Palatal root
• C) Mesiobuccal root
• D) Distobuccal root

A

B) Palatal root

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8
Q

In which direction do the apexes of the buccal roots of the maxillary first molar typically incline?
• A) Distally
• B) Lingually
• C) Mesially
• D) Buccally

A

A) Distally

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9
Q

Which cusp on the maxillary first molar is most commonly associated with the Cusp of Carabelli?
• A) Mesiobuccal cusp
• B) Distobuccal cusp
• C) Mesiolingual cusp
• D) Distolingual cusp

A

C) Mesiolingual cusp

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10
Q

What is the outline shape of the cervical margin of the maxillary first molar’s crown?
• A) Arc circle
• B) Straight line
• C) W shape
• D) Oval

A

A) Arc circle

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11
Q

In the buccal aspect, what is the shape of the occlusal outline of the maxillary first molar?
A) V shape
B) W shape with rounded mesial and distal V
C) Straight line
D) Circular

A

B) W shape with rounded Mesial and distal V

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12
Q

What characteristic is noted about the mesial outline of the maxillary first molar in the lingual aspect?
• A) Shorter and more convex
• B) Longer and flatter
• C) Circular and convex
• D) Straight and angled

A

B) Longer and flatter

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13
Q

Which groove on the occlusal aspect of the maxillary first molar separates the MB and ML cusps?
• A) Mesio-central groove
• B) Centro-buccal groove
• C) Disto-lingual groove
• D) Occlusal groove

A

A) Mesio-central groove

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14
Q

What is the shape of the occlusal outline on the lingual aspect of the maxillary first molar?
• A) W shape
• B) V shape
• C) Circular
• D) Straight

A

A) W shape

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15
Q

How many root canals are typically found in the maxillary first molar?
• A) 1
• B) 2
• C) 3
• D) 4

A

C) 3

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16
Q

Which of the following statements is true about the distal aspect of the maxillary first molar crown?

a) The distal aspect has a flat outline with minimal convexity.

b) The distal aspect has a more convex face and a circular arch outline.

c) The distal outline is a straight line with no significant curvature.

d) The distal aspect has a concave outline with a pronounced slope.

A

b) The distal aspect has a more convex face and a circular arch outline

17
Q

Which outline of the maxillary first molar crown is described as having a “W” shape with a rounded apex on the buccal/vestibular aspect?
a) Mesial outline
b) Distal outline
c) Cervical outline
d) Occlusal outline

A

D) occlusal outline

18
Q

On the lingual/palatal aspect of the maxillary first molar crown, how is the cervical margin described?
a) A straight line with no curvature
b) An arc circle with apex convexity
c) A flat outline with minimal curvature
d) A zigzag pattern

A

B) an arc circle with apex convexity

19
Q

What shape is the occlusal outline of the maxillary first molar crown on the buccal/vestibular aspect?
a) “W” shape with distinct V shapes
b) “M” shape with sharp angles
c) Circular with a prominent central fossa
d) Straight line with minimal curvature

A

A) W shape with distinctive V shapes

20
Q

What is the primary feature of the mesial aspect of the maxillary first molar crown?
a) A concave outline with no significant convexity
b) A letter V shape with the mesial slope greater than the buccal slope
c) A straight line with minimal relief
d) An irregular, non-uniform shape

A

b) a letter V shape with mesial slope > than B slope

Morpho (11 decks)

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