Question 1

Each of the following is evident on a maxillary first premolar EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)  Mesial marginal groove 
B)  Mesial developmental depression 
C)  Mesial marginal ridge 
D)  Distinct distal marginal ridge 
E)  Two small, afunctional lingual cusp tips 
A)  Mesial marginal groove 
B)  Mesial developmental depression 
C)  Mesial marginal ridge 
D)  Distinct distal marginal ridge 
E)  Two small, afunctional lingual cusp tips E

Question 2

In figure "A" below, identify the tooth, the number of cusps, and groove pattern.

Accepted Answer

A)  Mandibular first premolar; two cusps; "C" groove pattern 
B)  Mandibular second premolar; two cusps; "Y" groove pattern 
C)  Mandibular first premolar; two cusps; "H" groove pattern 
D)  Mandibular second premolar; two cusps; "U" groove pattern 
A)  Mandibular first premolar; two cusps; "C" groove pattern 
B)  Mandibular second premolar; two cusps; "Y" groove pattern 
C)  Mandibular first premolar; two cusps; "H" groove pattern 
D)  Mandibular second premolar; two cusps; "U" groove pattern D

Question 3

As a rule, the mandibular first premolars are always smaller than the mandibular second premolars. The most striking identifying feature of the mandibular first premolar is the mesiolingual developmental groove.

Accepted Answer

A)  Both statements are true. 
B)  The first statement is true; the second is false. 
C)  The first statement is false; the second is true. 
D)  Both statements are false. 
A)  Both statements are true. 
B)  The first statement is true; the second is false. 
C)  The first statement is false; the second is true. 
D)  Both statements are false. A

Question 4

Figure "A" below is which tooth?

Accepted Answer

A)  Maxillary right second premolar 
B)  Maxillary left second premolar 
C)  Maxillary right first premolar 
D)  Maxillary left first premolar 
A)  Maxillary right second premolar 
B)  Maxillary left second premolar 
C)  Maxillary right first premolar 
D)  Maxillary left first premolar

Question 5

Which premolar has the smallest lingual cusp?

Accepted Answer

A)  Maxillary first 
B)  Maxillary second 
C)  Mandibular first 
D)  Mandibular second 
A)  Maxillary first 
B)  Maxillary second 
C)  Mandibular first 
D)  Mandibular second

Question 6

Which selection best describes the roots of the maxillary first premolar?

Accepted Answer

A)  Two roots, one mesial and one distal 
B)  Two roots, one buccal and one lingual 
C)  Fused roots 
D)  One root only 
A)  Two roots, one mesial and one distal 
B)  Two roots, one buccal and one lingual 
C)  Fused roots 
D)  One root only

Question 7

Maxillary second premolars have a smoother, less detailed occlusal surface than first premolars.

Accepted Answer

A) True 
 B)False

Question 8

Figure "B" below illustrates a view of which surface?

Accepted Answer

A)  Buccal 
B)  Lingual 
C)  Mesial 
D)  Distal 
A)  Buccal 
B)  Lingual 
C)  Mesial 
D)  Distal

Question 9

All of the premolars usually have a transverse ridge that crosses an occlusal developmental groove EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)  Maxillary first 
B)  Maxillary second 
C)  Mandibular first 
D)  Mandibular second 
A)  Maxillary first 
B)  Maxillary second 
C)  Mandibular first 
D)  Mandibular second

Question 10

Any ridge that extends from the cusp tip to the central groove of the occlusal surface is called a marginal ridge. When two marginal ridges join, after traversing the tooth buccolingually, they form a transverse ridge.

Accepted Answer

A)  Both statements are true. 
B)  The first statement is true; the second is false. 
C)  The first statement is false; the second is true. 
D)  Both statements are false. 
A)  Both statements are true. 
B)  The first statement is true; the second is false. 
C)  The first statement is false; the second is true. 
D)  Both statements are false.

Question 11

The mandibular second premolar shows evidence of calcification at $2 {~~1 / 2}$ years. Completion of enamel formation does not occur; until 11 to 12 years.

Accepted Answer

A)  Both statements are true. 
B)  The first statement is true; the second is false. 
C)  The first statement is false; the second is true. 
D)  Both statements are false. 
A)  Both statements are true. 
B)  The first statement is true; the second is false. 
C)  The first statement is false; the second is true. 
D)  Both statements are false.

Question 12

Which of the following are located on the occlusal surfaces of premolars (select all that apply)?

Accepted Answer

A)  Marginal ridges 
B)  Transverse ridges 
C)  Triangular ridges 
D)  Premolar eminence 
A)  Marginal ridges 
B)  Transverse ridges 
C)  Triangular ridges 
D)  Premolar eminence

Question 13

Which type of cusp pattern does the letter "Y" represent on the mandibular second premolar (how many total cusps)?

Accepted Answer

A)  2 
B)  3 
C)  4 
D)  None of the above 
A)  2 
B)  3 
C)  4 
D)  None of the above

Question 14

Any ridge that runs from the cusp tip to the central groove of the occlusal surface is called a triangular ridge. Triangular ridges are located near the mesial marginal ridge of premolars but not near the distal marginal ridge.

Accepted Answer

A)  Both statements are true. 
B)  The first statement is true; the second is false. 
C)  The first statement is false; the second is true. 
D)  Both statements are false. 
A)  Both statements are true. 
B)  The first statement is true; the second is false. 
C)  The first statement is false; the second is true. 
D)  Both statements are false.

Question 15

All premolars have lingual cusps that are afunctional.

Accepted Answer

A) True 
 B)False

Question 16

Which premolar has buccal and lingual cusps that are almost the same height?

Accepted Answer

A)  Maxillary first 
B)  Maxillary second 
C)  Mandibular first 
D)  Mandibular second 
E)  None of the above 
A)  Maxillary first 
B)  Maxillary second 
C)  Mandibular first 
D)  Mandibular second 
E)  None of the above

Question 17

A prominent characteristic of the maxillary first premolar is a

Accepted Answer

A)  Mesiolingual developmental groove 
B)  Central fossa 
C)  Mesial marginal developmental groove 
D)  Distal marginal developmental groove 
A)  Mesiolingual developmental groove 
B)  Central fossa 
C)  Mesial marginal developmental groove 
D)  Distal marginal developmental groove

Question 18

The buccal cusp of a maxillary first premolar is longer than the buccal cusp of the second premolar.

Accepted Answer

A) True 
 B)False

Question 19

The mandibular second premolar always has three cusps because this tooth always forms from five lobes.

Accepted Answer

A)  Both the statement and the reason are correct and related. 
B)  Both the statement and the reason are correct but are NOT related. 
C)  The statement is correct, but the reason is NOT correct. 
D)  The statement is NOT correct, but the reason is correct. 
E)  NEITHER the statement NOR the reason is correct. 
A)  Both the statement and the reason are correct and related. 
B)  Both the statement and the reason are correct but are NOT related. 
C)  The statement is correct, but the reason is NOT correct. 
D)  The statement is NOT correct, but the reason is correct. 
E)  NEITHER the statement NOR the reason is correct.

Question 20

Which of the following are true of both maxillary first premolars and maxillary second premolars (select all that apply)?

Accepted Answer

A)  Both have two cusps. 
B)  Both have two roots. 
C)  Both are formed from four developmental lobes. 
D)  Both have two pulp horns. 
A)  Both have two cusps. 
B)  Both have two roots. 
C)  Both are formed from four developmental lobes. 
D)  Both have two pulp horns.

Exam 14: Premolars

Each of the following is evident on a maxillary first premolar EXCEPT one. Which one is the EXCEPTION?

In figure "A" below, identify the tooth, the number of cusps, and groove pattern.

As a rule, the mandibular first premolars are always smaller than the mandibular second premolars. The most striking identifying feature of the mandibular first premolar is the mesiolingual developmental groove.

Figure "A" below is which tooth?

Which premolar has the smallest lingual cusp?

Which selection best describes the roots of the maxillary first premolar?

Maxillary second premolars have a smoother, less detailed occlusal surface than first premolars.

Figure "B" below illustrates a view of which surface?

All of the premolars usually have a transverse ridge that crosses an occlusal developmental groove EXCEPT one. Which one is the EXCEPTION?

Any ridge that extends from the cusp tip to the central groove of the occlusal surface is called a marginal ridge. When two marginal ridges join, after traversing the tooth buccolingually, they form a transverse ridge.

The mandibular second premolar shows evidence of calcification at 2 1/22 {~~1 / 2}2 1/2 years. Completion of enamel formation does not occur; until 11 to 12 years.

Which of the following are located on the occlusal surfaces of premolars (select all that apply)?

Which type of cusp pattern does the letter "Y" represent on the mandibular second premolar (how many total cusps)?

Any ridge that runs from the cusp tip to the central groove of the occlusal surface is called a triangular ridge. Triangular ridges are located near the mesial marginal ridge of premolars but not near the distal marginal ridge.

All premolars have lingual cusps that are afunctional.

Which premolar has buccal and lingual cusps that are almost the same height?

A prominent characteristic of the maxillary first premolar is a

The buccal cusp of a maxillary first premolar is longer than the buccal cusp of the second premolar.

The mandibular second premolar always has three cusps because this tooth always forms from five lobes.

Which of the following are true of both maxillary first premolars and maxillary second premolars (select all that apply)?

Oral Cavity

The Tooth: Functions and Terms

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Filters

The mandibular second premolar shows evidence of calcification at $2 {~~1 / 2}$ years. Completion of enamel formation does not occur; until 11 to 12 years.