Question 1

Which deciduous molar has three or four cusps, an oblique ridge, three roots, and often has no distal pit?

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 A

Question 2

At 3 to 4 years of age, the coronal aspect of the root begins to resorb and continues apically until the tooth is shed. The process of shedding the deciduous dentition and replacement by permanent successors is called exfoliation.

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. C

Question 3

The root of the mandibular canine is slightly shorter and more tapered than its maxillary counterpart. Both roots taper facially and apically.

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. B

Question 4

Which of the following statements accurately describe the deciduous maxillary first molar (select all that apply)?

Accepted Answer

A)  This tooth closely resembles the permanent maxillary second premolar. 
B)  This tooth is the most atypical of all maxillary molars. 
C)  This tooth is the most typical of all maxillary molars, closely resembling deciduous maxillary second molars. 
D)  Like all other maxillary molars, this tooth is wider buccolingually than mesiodistally. 
E)  The crown may have three or four cusps. 
A)  This tooth closely resembles the permanent maxillary second premolar. 
B)  This tooth is the most atypical of all maxillary molars. 
C)  This tooth is the most typical of all maxillary molars, closely resembling deciduous maxillary second molars. 
D)  Like all other maxillary molars, this tooth is wider buccolingually than mesiodistally. 
E)  The crown may have three or four cusps.

Question 5

Match between columns
                        Premises: Canines
Maxillary first molar
Buccal
Primary mandibular second molar
Maxillary central incisors

Accepted Answer

The Answer of Facial and Resembles the permanent mandibular first is...

Question 6

An extra margin of space is available for the eruption of the permanent canine as well as the first and second premolars because the formation of diastemas provides this extra space.

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 7

The deciduous lateral incisors erupt prior to the central incisors. Lateral incisors erupt between 13 and 19 months whereas central incisors erupt between 16 and 22 months.

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 8

Deciduous maxillary molars have a well-developed cusp of Carabelli.

Accepted Answer

A) True 
 B)False

Question 9

The crown of a deciduous maxillary first molar is much larger than that of the maxillary second molar, however the roots of the second molar are longer.

Accepted Answer

A) True 
 B)False

Question 10

Primary teeth are whiter than their permanent successors. They are smaller in crown dimension but have roots approximately the same size as the permanent dentition.

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

Which deciduous molars have three root canals (select all that apply)?

Accepted Answer

A)  Maxillary first 
B)  Maxillary second 
C)  Mandibular first 
D)  Mandibular second 
E) Not of above 
A)  Maxillary first 
B)  Maxillary second 
C)  Mandibular first 
D)  Mandibular second 
E) Not of above

Question 12

Decay progresses quickly in deciduous teeth due to each of the following EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)  Presence of high pulp horns 
B)  Thinner enamel covering crowns 
C)  Harder enamel 
D)  Thinner dentin 
A)  Presence of high pulp horns 
B)  Thinner enamel covering crowns 
C)  Harder enamel 
D)  Thinner dentin

Question 13

The teeth that erupt between 16-22 months of age are the deciduous

Accepted Answer

A)  Lateral incisors 
B)  Canines 
C)  First molars 
D)  Second molars 
A)  Lateral incisors 
B)  Canines 
C)  First molars 
D)  Second molars

Question 14

Deciduous canines erupt before first molars.

Accepted Answer

A) True 
 B)False

Question 15

Root trunks of deciduous molars are long.

Accepted Answer

A) True 
 B)False

Question 16

The buccocervical ridges on the deciduous molars are quite pronounced. The second molar shows the most prominence.

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 17

Which is the largest root on deciduous maxillary molars?

Accepted Answer

A)  Mesiobuccal 
B)  Mesiolingual 
C)  Distobuccal 
D)  Lingual 
A)  Mesiobuccal 
B)  Mesiolingual 
C)  Distobuccal 
D)  Lingual

Question 18

The occlusal table is more narrow buccolingually because the buccal and lingual surfaces of deciduous molars taper occlusally.

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 19

Which of the following statements accurately describe the deciduous maxillary lateral incisor (select all that apply)?

Accepted Answer

A)  The crown is smaller than a central incisor's crown. 
B)  The root of the lateral incisor appears much longer than its crown. 
C)  A common anomaly is that the maxillary lateral incisor appears peg-shaped. 
D)  The lateral incisor shows considerable variation in form. 
E)  This tooth appears similar to a deciduous central incisor. 
A)  The crown is smaller than a central incisor's crown. 
B)  The root of the lateral incisor appears much longer than its crown. 
C)  A common anomaly is that the maxillary lateral incisor appears peg-shaped. 
D)  The lateral incisor shows considerable variation in form. 
E)  This tooth appears similar to a deciduous central incisor.

Question 20

Each of the following is true of deciduous teeth as compared with permanent teeth EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)  Deciduous teeth are generally lighter in color. 
B)  Dentin is thinner. 
C)  Pulp horns extend higher occlusally. 
D)  There is a pronounced cervical ridge. 
E)  Enamel is thicker and more protective. 
A)  Deciduous teeth are generally lighter in color. 
B)  Dentin is thinner. 
C)  Pulp horns extend higher occlusally. 
D)  There is a pronounced cervical ridge. 
E)  Enamel is thicker and more protective.

Exam 16: Deciduous Dentition

Which deciduous molar has three or four cusps, an oblique ridge, three roots, and often has no distal pit?

At 3 to 4 years of age, the coronal aspect of the root begins to resorb and continues apically until the tooth is shed. The process of shedding the deciduous dentition and replacement by permanent successors is called exfoliation.

The root of the mandibular canine is slightly shorter and more tapered than its maxillary counterpart. Both roots taper facially and apically.

Which of the following statements accurately describe the deciduous maxillary first molar (select all that apply)?

An extra margin of space is available for the eruption of the permanent canine as well as the first and second premolars because the formation of diastemas provides this extra space.

The deciduous lateral incisors erupt prior to the central incisors. Lateral incisors erupt between 13 and 19 months whereas central incisors erupt between 16 and 22 months.

Deciduous maxillary molars have a well-developed cusp of Carabelli.

The crown of a deciduous maxillary first molar is much larger than that of the maxillary second molar, however the roots of the second molar are longer.

Primary teeth are whiter than their permanent successors. They are smaller in crown dimension but have roots approximately the same size as the permanent dentition.

Which deciduous molars have three root canals (select all that apply)?

Decay progresses quickly in deciduous teeth due to each of the following EXCEPT one. Which one is the EXCEPTION?

The teeth that erupt between 16-22 months of age are the deciduous

Deciduous canines erupt before first molars.

Root trunks of deciduous molars are long.

The buccocervical ridges on the deciduous molars are quite pronounced. The second molar shows the most prominence.

Which is the largest root on deciduous maxillary molars?

The occlusal table is more narrow buccolingually because the buccal and lingual surfaces of deciduous molars taper occlusally.

Which of the following statements accurately describe the deciduous maxillary lateral incisor (select all that apply)?

Each of the following is true of deciduous teeth as compared with permanent teeth EXCEPT one. Which one is the EXCEPTION?

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

Premolars

Molars

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

The Tongue

Salivary Glands

Osteology of the Skull

Nose, Nasal Cavity, and Paranasal Sinuses

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

Temporomandibular Joint

Muscles of Facial Expression

Soft Palate and Pharynx

Arterial Supply and Venous Drainage

Salivary Glands

Nervous System

Lymphatics and Spread of Dental Infection

Filters