Deck 16: Permanent Anterior Teeth

Question 1

The number of cusps present on the masticatory surface of a permanent canine is:

A) one.
B) two.
C) three.
D) four.

Answer 1

one.

Question 2

Which of the following features is noted on a newly erupted permanent mandibular canine?

A) Cingulum offset to the mesial
B) Mesial height of contour in the cervical third
C) Mesial cusp slope shorter than the distal
D) Well-demarcated marginal ridges

Answer 2

Mesial cusp slope shorter than the distal

Question 3

The lingual ridge is located ____ on the lingual surface of permanent maxillary canines.

A) mesiodistally
B) incisocervically
C) obliquely
D) cervically

Answer 3

incisocervically

Question 4

Which of the following features are located on the lingual surfaces of all permanent anterior teeth?

A) Mamelons, marginal ridges
B) Marginal ridges, cingulum
C) Imbrication lines, cusp
D) Imbrication lines, cingulum

Question 5

Which of the following surfaces is considered the masticatory surface for permanent anterior teeth when newly erupted?

A) Incisal edge
B) Incisal ridge
C) Occlusal table
D) Cervical curvature

Question 6

Which of the following teeth have the greatest depth of curvature of the cementoenamel junction on the mesial surface?

A) #6
B) #8
C) #14
D) #24

Question 7

Which of the following lingual surface features is usually prominent on both tooth #7 and tooth #10?

A) Prominent linguoincisal ridge
B) Offset and wide cingulum
C) Shallow lingual fossa
D) Faint marginal ridges

Question 8

The longest tooth in the mandibular arch of the permanent dentition is the mandibular:

A) central incisor.
B) lateral incisor.
C) canine.
D) second premolar.

Question 9

Which of the following features is a result of the greater development of the middle labial lobe on both tooth #6 and tooth #11?

A) Imbrication line
B) Labial ridge
C) Mamelon
D) Incisal ridge

Question 10

Which of the following teeth may have a linguogingival groove?

A) #7 and #8
B) #12 and #13
C) #24 and #25
D) #27 and #28

Question 11

The permanent mandibular canine,when compared to the maxillary canine,has a:

A) more developed lingual surface.
B) narrower mesiodistal dimension.
C) wider labiolingual dimension.
D) more developed cingulum.

Question 12

The completion of the root for the permanent maxillary central incisor occurs at age _____ years.

A) 6
B) 7 to 8
C) 10
D) 12

Question 13

One of the functions of the permanent canines is:

A) biting.
B) grinding.
C) tearing.
D) cutting.

Question 14

The number of mamelons seen on a newly erupted permanent maxillary central incisor is:

A) one.
B) two.
C) three.
D) four.

Question 15

Which of the following is a correct statement concerning permanent maxillary canines?

A) Mesial and distal aspects present an oval outline.
B) They resemble the maxillary incisors but are weaker looking.
C) They may also fail to erupt fully, remaining impacted.
D) The single cusp tip is not as sharp as a mandibular one.

Question 16

The function of permanent incisors is:

A) biting and tearing.
B) grinding and cutting.
C) biting and cutting.
D) tearing and grinding.

Question 17

Which permanent teeth are usually the smallest and have the simplest form?

A) Maxillary lateral incisors
B) Mandibular lateral incisors
C) Maxillary central incisors
D) Mandibular central incisors

Question 18

Which of the following range of eruption dates of the listed teeth is correct?

A) #8: 7 to 8 years
B) #11: 10 to 11 years
C) #23: 6 to 7 years
D) #27: 11 to 12 years

Question 19

Permanent anterior teeth have ____ developmental lobes and are ____ when viewed from either proximal surface.

A) 3; trapezoidal
B) 4; trapezoidal
C) 3; triangular
D) 4; triangular

Question 20

A cingulum in varying developmental levels within the permanent dentition can be found on the lingual surfaces of:

A) only incisors.
B) only canines.
C) all anterior teeth.
D) all posterior teeth.

Question 21

Which of the following helps to distinguish the permanent right mandibular lateral incisor from the left?

A) The mesioincisal angle of incisal ridge is sharper than the distoincisal angle.
B) Greater height of cementoenamel curvature is noted more on the occlusal than on the distal surface.
C) A rounder appearance is noted both labially and lingually from the incisal view.
D) Both the mesial marginal ridge and the distal marginal ridge are more developed.

Question 22

The incisal ridge of the permanent mandibular central incisors is usually at ____degrees to the labiolingual axis of the crown.

A) 20
B) 45
C) 60
D) 90

Question 23

From its labial view,which of the following helps one to distinguish the newly erupted permanent right maxillary canine from the left?

A) The distal outline is longer than the mesial outline.
B) There is a depression between the mesial contact area and the cementoenamel junction.
C) The mesial and distal contacts are on two different levels.
D) The mesial cusp slope is longer than the distal cusp slope.

Question 24

Which of the following teeth are more commonly involved in partial anodontia?

A) Maxillary central incisors
B) Maxillary lateral incisors
C) Mandibular central incisors
D) Mandibular lateral incisors

Question 25

From which proximal surfaces are the permanent canines more accessible during instrumentation?

A) Labial approach
B) Lingual approach
C) Mesial approach
D) Distal approach

Question 26

Which of the following is a factor that makes the permanent canines stable teeth within the dentition?

A) Rough crown form
B) Short root overall
C) Lingual root concavities
D) Guideposts during lateral deviation

Question 27

Which of the following can occur to the permanent incisors to make their mamelons even more noticeable?

A) Avulsion
B) Whitening
C) Diastema
D) Attrition

Question 28

When viewed from the labial or lingual,the crown outline of the permanent canine appears:

A) rhomboidal.
B) triangular.
C) pentagonal.
D) cuboidal.

Question 29

Which of the following is correct concerning permanent mandibular canines and their eruption timetable?

A) Eruption may start at 12 years of age.
B) Eruption may continue until 14 years of age.
C) They erupt before the maxillary canines.
D) They erupt before most of the incisors.

Question 30

Which of the following can be a risk factor for periodontal disease on the permanent maxillary lateral incisors?

A) Diastema
B) Microdontia
C) Accessory cusps
D) Linguogingival groove