Deck 18: Primary Dentition

Question 1

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

A) Primary maxillary canine
B) Primary mandibular canine
C) Primary maxillary first molar
D) Primary maxillary second molar

Answer 1

Primary maxillary second molar

Question 2

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

A) Primary maxillary lateral incisor
B) Primary mandibular lateral incisor
C) Primary maxillary canine
D) Primary mandibular canine

Answer 2

Primary maxillary canine

Question 3

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

A) 4
B) 6
C) 9
D) 12

Answer 3

9

Question 4

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

A) Constricted crown
B) Wider occlusal table
C) Less prominent cervical ridge
D) Narrow contact with extra height

Question 5

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

A) Lingual surface is smoother
B) Deeper lingual fossa
C) Smaller mesiodistally
D) Mesial slope longer than distal slop

Question 6

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

A) Larger proportion to pulp chambers
B) Smaller proportion to pulp horns
C) Pulp horns farther away from surface
D) Deeper pulp chambers

Question 7

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

A) Primary maxillary first molar
B) Primary maxillary second molar
C) Primary mandibular first molar
D) Primary mandibular second molar

Question 8

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

A) 12
B) 16
C) 18
D) 20

Question 9

Which of the following features can always be noted on the primary maxillary central incisors?

A) Three mamelons on labial surface
B) Developmental depressions and imbrication lines
C) Lingual pits with deeper lingual fossa
D) Proximal surfaces are similar

Question 10

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

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 age

Question 11

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

A) Shorter than crown length
B) Wider mesiodistally
C) Flare is noted near the apex
D) Fewer accessory canals

Question 12

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.

A) canine
B) second premolar
C) first molar
D) second molar

Question 13

The crown of the primary mandibular central incisor looks more like the primary _____ than its permanent successor.

A) maxillary central incisor
B) maxillary lateral incisor
C) mandibular lateral incisor
D) maxillary canine

Question 14

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

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 week

Question 15

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

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

Question 16

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

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 molar

Question 17

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

A) Primary maxillary first molar
B) Primary maxillary second molar
C) Primary mandibular first molar
D) Primary mandibular second molar

Question 18

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

A) Susceptible to fracture during extraction procedures
B) Concrescence with nearby canines
C) Dilaceration of the root trunk
D) Extra root branches

Question 19

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?

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

Question 20

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

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 crown

Question 21

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

A) Primary maxillary central incisors
B) Primary maxillary lateral incisors
C) Primary maxillary canines
D) Primary maxillary first molars

Question 22

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

A) Canines
B) Premolars
C) First molars
D) Second molars

Question 23

Which primary tooth may be retained due to partial anodontia of the permanent second premolars?

A) Canines
B) Premolars
C) First molars
D) Second molars

Question 24

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

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

Question 25

What spaces are mainly involved as the primate spaces located within the primary dentition?

A) Between the primary maxillary central incisors
B) Between the primary maxillary lateral incisor and canine
C) Between the primary mandibular first and second molars
D) Behind the primary mandibular second molars