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Review for Dental anatomy - New > Specific facts on premolars > Flashcards

Specific facts on premolars Flashcards

1
Q

Mandibular premolar crowns tilt in what direction?

A

Tilted lingually

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2
Q

From the proximal view what is the outline of the mandibular premolar and the maxillary premolar?

A

Mandibular premolar = rhomboid

Maxillary premolar = trapezoidal

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3
Q

Which premolar has equal lengths for buccal and lingual cusps?

A

Maxillary 2nd Premolar

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4
Q

Which premolar has its lingual cusps 1.0mm shorter than buccal cusps?

A

Maxillary 1st premolar

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5
Q

From the occlusal view, what is the shape of the mandibular premolars

A

square

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6
Q

From the occlusal view what is the shape of the maxillary premolars

A

Rectangular - wider buccolingually

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7
Q

For which tooth are the mesial cusp slopes longer than distal cusp slopes?

A

Maxillary 1st premolar

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8
Q

What is the angle made by the buccal cusps of maxillary first premolars?

A

More pointed at 105

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9
Q

What is the angle made by the maxillary second premolars?

A

Less pointed at 120

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10
Q

Which tooth has more prominent buccal ridges from the occlusally and facially?

A

Maxillary 1st premolar

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11
Q

Which premolar has a divided root?

A

Maxillary 1st premolar

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12
Q

Which premolars have their lingual cusp tipped toward the mesial?

A

Maxillary premolars

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13
Q

How long is the root trunk before it bifurcates for the maxillary 1st premolar?

A

7.0 mm

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14
Q

Which premolar has a mesial crown concavity?

A

Maxillary 1st premolar

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15
Q

Which premolar has mesial marginal ridge grooves?

A

Maxillary 1st premolar

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16
Q

Which premolar has a small central groove?

A

Maxillary 2nd premolar

17
Q

Which premolar is more symmetrical overall?

A

Maxillary 2nd premolar

18
Q

Which premolar has a kidney bean cross-section and why?

A

Maxillary 1st premolar because the mesial concavity which causes the mesial marginal groove to continue to the mesial proximal suface.

19
Q

Which mandibular premolar is more pointed and what is the angle?

A

Mandibular first premolar is more pointed at 110 degrees compared to 130 degrees

20
Q

For the mandibular 1st premolat where is the mesial proximal contact in relation to the distal proximal contact?

A

Mesial proximal contact is more cervical and distal proximal contact is more occlusal

21
Q

Describe the lingual cusp of the mandibular first premolar.

A

Small and nonfunctional

22
Q

Lingual cusps for mandibular second premolar is positioned more to which direction?

A

Mesially positioned

23
Q

Which premolar has a mesiolingual groove separating the mesial marginal ridge from the lingual cusp?

A

Mandibular 1st premolar

24
Q

If there are two lingual cusps on a mandibular 2nd premolar then which is the bigger lingual cusp?

A

Mesiolingual cusp

25
Q

On which prmolar does the mesial marginal ridge slope cervically toward the lingual and at what angle?

A

Mandibular 1st premolar

45 degree angle

26
Q

Which premolar is mostly likely to not have mid-root depressions?

A

Mandibular 2nd premolar

27
Q

What is the occlusal outline of the mandibular 1st premolar?

A

Diamond

28
Q

Name the two teeth that have a longer mesial cusp slope than the distal cusp slope.

A

Primary maxillary canine

Permanent Maxillary 1st premolar

29
Q

Is the distal marginal ridge or mesial marginal ridge located more cervically?

A

Distal marginal ridge is located more cervically

30
Q

Which tooth has the lingual cusp at the same height as the facial cusp?

A

Maxillary 2nd premolar

31
Q

which premolar has a lot of supplemental grooves?

A

Maxillary 2nd premolar

32
Q

Which premolars is frequently bifurcated for 1/2 length with buccal and lingual root?

A

Maxillary 1st premolar

Review for Dental anatomy - New (8 decks)

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