Question 1

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 onlyE) A) and C)
F) A) and B) B

Question 2

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

Accepted Answer

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

Question 3

Which of the following are true of the maxillary second premolars (Select all that apply. ) ?

Accepted Answer

A)   Evidence of calcification is seen at 2 years of age.
B)   Completion of enamel formation occurs at 4 years of age.
C)   Eruption occurs at 11 to 13 years of age.
D)   Root formation is completed by 12 to 14 years of age.E) A) and C)
F) A) and D)

Question 4

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

Accepted Answer

A)   Buccal
B)   Lingual
C)   Mesial
D)   DistalE) B) and D)
F) None of the above

Question 5

The overall height of the premolars is longer than that of the canines because the root of the premolars is considerably longer than those of the canines.

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.F) A) and B)
G) A) and C)

Question 6

Premolars erupt between 9 and 12 years of age.Premolars are the succedaneous teeth that replace primary canines.

Accepted Answer

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

Question 7

Which premolar has the smallest lingual cusp?

Accepted Answer

A)   Maxillary first
B)   Maxillary second
C)   Mandibular first
D)   Mandibular secondE) B) and C)
F) A) and D)

Question 8

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

Accepted Answer

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

Question 9

Mandibular first premolars typically have two roots,a mesial and a distal.An anomaly is formation of a third auxiliary root.

Accepted Answer

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

Question 10

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 premolarE) B) and C)
F) A) and B)

Question 11

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 eminenceE) None of the above
F) All of the above

Question 12

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 aboveF) B) and D)
G) A) and B)

Question 13

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 patternE) C) and D)
F) B) and D)

Question 14

The mandibular second premolar shows evidence of calcification at 2.5 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 statement is false.
C)   The first statement is false;the second statement is true.
D)   Both statements are false.E) C) and D)
F) A) and B) B

Question 15

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.E) B) and D)
F) A) and D)

Question 16

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 tipsF) C) and E)
G) C) and D)

Question 17

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

Question 18

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

Accepted Answer

A) True 
 B)False

Question 19

The lingual surface of premolars is formed from how many lobes?

Accepted Answer

A)   One
B)   Two
C)   Three
D)   Not all premolars are formed from the same number of lobes.E) B) and C)
F) B) and D)

Question 20

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

Exam 14: Premolars

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

Correct AnswerverifiedB

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

Correct AnswerverifiedShow Answer

Which of the following are true of the maxillary second premolars (Select all that apply. ) ?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The overall height of the premolars is longer than that of the canines because the root of the premolars is considerably longer than those of the canines.

Correct AnswerverifiedShow Answer

Premolars erupt between 9 and 12 years of age.Premolars are the succedaneous teeth that replace primary canines.

Correct AnswerverifiedD

Which premolar has the smallest lingual cusp?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Mandibular first premolars typically have two roots,a mesial and a distal.An anomaly is formation of a third auxiliary root.

Correct AnswerverifiedShow Answer

Figure "A" below is which tooth?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The mandibular second premolar shows evidence of calcification at 2.5 years.Completion of enamel formation does not occur,until 11 to 12 years.

Correct AnswerverifiedB

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The lingual surface of premolars is formed from how many lobes?

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

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B

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D

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B

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