Question 1

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. 
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. B

Question 2

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. 
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. D

Question 3

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 B

Question 4

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

Question 5

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 pattern 
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 pattern

Question 6

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. 
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.

Question 7

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

Question 8

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

Accepted Answer

A) True 
 B)False

Question 9

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. 
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.

Question 10

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.

Question 11

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 pattern 
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 pattern

Question 12

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. 
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.

Question 13

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 14

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 15

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. 
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.

Question 16

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. 
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 17

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 18

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

Question 19

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 20

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

Exam 14: Premolars

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

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

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

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

In figure "B" 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.

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

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

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.

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

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

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

Which premolar has the smallest lingual cusp?

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

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

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.

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

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

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

Figure "A" below is which tooth?

Oral Cavity

The Tooth: Functions and Terms

Fundamental and Preventive Curvatures

Dentition

Development, form, and Eruption

Occlusion

Dental Anomalies

Supporting Structures

Clinical Considerations

Tooth Identification

Root Morphology

Incisors

Canines

Molars

Deciduous Dentition

Basic Tissues

Development of Orofacial Complex

Dental Lamina and Enamel Organ

Enamel, Dentin, and Pulp

Root Formation and Attachment Apparatus

Eruption and Shedding of Teeth

Oral Mucous Membrane

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Histology of the Salivary Glands

Osteology of the Skull

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Muscles of Mastication, Hyoid Muscles, and Sternocleidomastoid and Trapezius Muscles

Tempo-romandibular Joint

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Arterial Supply and Venous Drainage

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Nervous System

Lymphatics and Spread of Dental Infection

Anatomical Considerations of Local Anesthesia

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