Question 1

How many erupted primary teeth does a 3-year-old child usually have?

Accepted Answer

A)   12
B)   16
C)   18
D)   20E) All of the above
F) A) and B)

Question 2

How does the primary central incisor compare to its permanent successor?

Accepted Answer

A)   Crown appears wider overall
B)   Not as constricted at the cementoenamel junction
C)   Quite symmetrical tooth overall
D)   Smooth interface at the dentinoenamel junctionE) B) and C)
F) A) and C) B

Question 3

Which of the following is a correct statement about primate spaces found during the primary dentition period?

Accepted Answer

A)   Found between mandibular lateral incisor and canine
B)   Necessary for proper permanent dentition alignment
C)   Necessary to compensate for mesial drift
D)   Found between the maxillary canine and first molarE) A) and B)
F) A) and C)

Question 4

What is the correct name given to the teeth designated as "C" and "H"?

Accepted Answer

A)   Primary maxillary central incisors
B)   Primary maxillary lateral incisors
C)   Primary maxillary canines
D)   Primary maxillary first molarsE) None of the above
F) B) and D) C

Question 5

Which of the following primary molars usually has a cusp of Carabelli present on its occlusal surface?

Accepted Answer

A)   Primary maxillary first molar
B)   Primary maxillary second molar
C)   Primary mandibular first molar
D)   Primary mandibular second molarE) C) and D)
F) A) and C) B

Question 6

Which of the following primary molars has an H-shaped groove pattern on its occlusal surface?

Accepted Answer

A)   Primary maxillary first molar
B)   Primary maxillary second molar
C)   Primary mandibular first molar
D)   Primary mandibular second molarE) B) and C)
F) A) and B)

Question 7

When does mineralization of the primary dentition begin during prenatal development?

Accepted Answer

A)   During the fourth to sixth week
B)   During the sixth to eighth week
C)   During the eighth to twelfth week
D)   During the thirteenth to sixteenth weekE) None of the above
F) B) and C)

Question 8

Which permanent teeth replace the primary molars when the primary molars are shed?

Accepted Answer

A)   Canines
B)   Premolars
C)   First molars
D)   Second molarsE) A) and C)
F) A) and D)

Question 9

Which of the following features is noted concerning the hard dental tissue of a primary molar as compared to that of a permanent molar?

Accepted Answer

A)   Thinner dentin between pulp chambers and enamel
B)   Overall thinner enamel throughout the crown
C)   Overall thicker dentin throughout the crown and root
D)   Inconsistent enamel thickness throughout the crownE) None of the above
F) B) and D)

Question 10

Approximately how many years do the primary molars need to function during either the primary or mixed dentition period?

Accepted Answer

A)   4
B)   6
C)   9
D)   12E) C) and D)
F) All of the above

Question 11

How does the primary mandibular canine compare to its permanent counterpart?

Accepted Answer

A)   Lingual surface is smoother
B)   Deeper lingual fossa
C)   Smaller mesiodistally
D)   Mesial slope longer than distal slopE) None of the above
F) A) and C)

Question 12

How long does the primary dentition generally function in esthetics,mastication,and speech for a child?

Accepted Answer

A)   From 2 to 7 years
B)   From 3 to 9 years
C)   From 5 to 12 years
D)   From 6 to 14 yearsE) A) and D)
F) B) and C)

Question 13

Which of the following features is found on a primary molar's roots as compared to the roots of a permanent molar?

Accepted Answer

A)   Shorter than crown length
B)   Wider mesiodistally
C)   Flare is noted near the apex
D)   Fewer accessory canalsE) None of the above
F) C) and D)

Question 14

Which of the following statements is correct concerning when a child's first dental appointment should occur?

Accepted Answer

A)   Within 1 year of the eruption of first primary tooth
B)   No later than 12 months of age
C)   Within 2 years of the eruption of first primary tooth
D)   No later than 24 months of ageE) B) and C)
F) None of the above

Question 15

Which of the following complications are associated with extraction of primary molars?

Accepted Answer

A)   Susceptible to fracture during extraction procedures
B)   Concrescence with nearby canines
C)   Dilaceration of the root trunk
D)   Extra root branchesE) None of the above
F) B) and C)

Question 16

Which of the following primary teeth has a relatively longer and sharper cusp than of its permanent successor when first erupted?

Accepted Answer

A)   Primary maxillary lateral incisor
B)   Primary mandibular lateral incisor
C)   Primary maxillary canine
D)   Primary mandibular canineE) B) and D)
F) All of the above

Question 17

Child patients within the mixed dentition period and their supervising adults may not notice the presence of the newly erupted permanent _____ of either arch because,when it erupts,it appears just like a larger primary second molar that is adjacent to it.

Accepted Answer

A)   canine
B)   second premolar
C)   first molar
D)   second molarE) C) and D)
F) A) and D)

Question 18

Which of the following must be suspected in a primary or mixed dentition if there is severe periodontal inflammation and destruction with evidence of little dental biofilm?

Accepted Answer

A)   Gingival disease
B)   Chronic periodontitis
C)   Aggressive periodontitis
D)   Necrotizing periodontal diseaseE) A) and D)
F) C) and D)

Question 19

Which tooth's crown in the primary dentition does not resemble any other crown of either dentition?

Accepted Answer

A)   Primary maxillary canine
B)   Primary mandibular canine
C)   Primary maxillary first molar
D)   Primary maxillary second molarE) None of the above
F) All of the above

Question 20

Which of the following features is found on a primary molar's pulp cavity as compared to the pulp cavity of a permanent molar?

Accepted Answer

A)   Larger proportion to pulp chambers
B)   Smaller proportion to pulp horns
C)   Pulp horns farther away from surface
D)   Deeper pulp chambersE) All of the above
F) A) and B)

Exam 18: Primary Dentition

How many erupted primary teeth does a 3-year-old child usually have?

Correct AnswerverifiedShow Answer

How does the primary central incisor compare to its permanent successor?

Correct AnswerverifiedB

Which of the following is a correct statement about primate spaces found during the primary dentition period?

Correct AnswerverifiedShow Answer

What is the correct name given to the teeth designated as "C" and "H"?

Correct AnswerverifiedC

Which of the following primary molars usually has a cusp of Carabelli present on its occlusal surface?

Correct AnswerverifiedB

Which of the following primary molars has an H-shaped groove pattern on its occlusal surface?

Correct AnswerverifiedShow Answer

When does mineralization of the primary dentition begin during prenatal development?

Correct AnswerverifiedShow Answer

Which permanent teeth replace the primary molars when the primary molars are shed?

Correct AnswerverifiedShow Answer

Which of the following features is noted concerning the hard dental tissue of a primary molar as compared to that of a permanent molar?

Correct AnswerverifiedShow Answer

Approximately how many years do the primary molars need to function during either the primary or mixed dentition period?

Correct AnswerverifiedShow Answer

How does the primary mandibular canine compare to its permanent counterpart?

Correct AnswerverifiedShow Answer

How long does the primary dentition generally function in esthetics,mastication,and speech for a child?

Correct AnswerverifiedShow Answer

Which of the following features is found on a primary molar's roots as compared to the roots of a permanent molar?

Correct AnswerverifiedShow Answer

Which of the following statements is correct concerning when a child's first dental appointment should occur?

Correct AnswerverifiedShow Answer

Which of the following complications are associated with extraction of primary molars?

Correct AnswerverifiedShow Answer

Which of the following primary teeth has a relatively longer and sharper cusp than of its permanent successor when first erupted?

Correct AnswerverifiedShow Answer

Child patients within the mixed dentition period and their supervising adults may not notice the presence of the newly erupted permanent _____ of either arch because,when it erupts,it appears just like a larger primary second molar that is adjacent to it.

Correct AnswerverifiedShow Answer

Which of the following must be suspected in a primary or mixed dentition if there is severe periodontal inflammation and destruction with evidence of little dental biofilm?

Correct AnswerverifiedShow Answer

Which tooth's crown in the primary dentition does not resemble any other crown of either dentition?

Correct AnswerverifiedShow Answer

Which of the following features is found on a primary molar's pulp cavity as compared to the pulp cavity of a permanent molar?

Correct AnswerverifiedShow Answer

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