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Dental Anatomy Midterm > Dental Anatomy Midterm > Flashcards

Dental Anatomy Midterm Flashcards

1
Q

When looking at the facial or lingual aspect of all anterior teeth, they have a:

A

Trapezoidal outline

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2
Q

The mesial and distal aspects of the anterior central and lateral incisors may be included within triangles

The base of the triangle is represented by the cervical portion of the crown and the apex by the incisal ridge.

A

Both statements are true

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3
Q

The maxillary permanent central incisor has these unique characteristics:

A

All of the above

Most prominent tooth
Mesial CEJ contour is greater than any other tooth
Second longest crown length of any other tooth
Widest crown of all anterior teeth

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4
Q

The maxillary permanent central incisor crown has a mesiodistal dimension greater than the faciolingual dimension.

A

True

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5
Q

The maxillary permanent lateral has these unique characteristics:

A

All of the above
Most common congenitally missing tooth
Second most variable tooth form
Lingual surface is the most concave of all incisors

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6
Q

The maxillary primary first molars are represented by letters:

A

B and I

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7
Q

The mixed dentition period begins when the primary teeth begin to emerge and lasts for about six years

A

False

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8
Q

The enamel, cementum, dentin, and pulp, make up the four hard tissues of the tooth.

A

False

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9
Q

Teeth numbers 7,8,9,10, could have what surfaces

A

A,b,&c
Facial
Lingual
Labial

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10
Q

With maxillary incisors:

The facial and lingual CEJ’s curve apically.

The mesial and distal CEJ’s curve coronally

A

Both statements are true

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11
Q

Anterior teeth have six point angles and posterior teeth have eight point angles.

All teeth have four line angles.

A

Both statements are false

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12
Q

Which of the following is true about premolars?

A

All of the above ‬‬
They follow canines and precede molars
There are usually four of them in each arch
They are located posteriorly in the arch ‬‬

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13
Q

Which of the following groups of numbers identify the maxillary left anterior

teeth?

A

9, 10, 11 ‬‬

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14
Q

That portion of the pulp cavity found mainly within the coronal portion of the tooth

is called the:

A

pulp chamber ‬‬

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15
Q

The junction of the dentin and the enamel is called the:

A

dentinoenamel junction ‬‬

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16
Q

Which of the following is an example of a correctly formulated point angle?

A

distolabioincisal

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17
Q

A _____ is the lingual lobe of an anterior tooth.

A

Cingulum

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18
Q 
A \_\_\_\_\_\_\_\_\_\_ is any one of the three rounded protuberances found on the incisal ridges of newly erupted incisor teeth.
 Lobe
 Mamelon
 Cusp
 Supplemental groove
A

Mamelon

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19
Q

The incised edge takes an oblique course appearing as if twisted around the long axis of the root. this describes most succinctly the

A

mandibular lateral incisor-incisal view

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20
Q

The labiolingual (faciolingual) dimension of the maxillary and mandibular canines is greater than their mesiodistal dimension.

A

True

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21
Q

A linguogingival grove may be present on the root (and possibly on the crown) of the maxillary lateral incisor.

 A maxillary lateral incisor has a single conical root that is relatively smooth and straight but may curve slightly to the distal.
A

Both statements are true

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22
Q

In the primary dentition there are ____ teeth per arch, while in the permanent dentition there are ____ teeth per arch.

A

10, 16

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23
Q

Which characteristics correctly identify the mandibular central incisor:

a. crown is generally narrower mesiodistally than the crown of a mandibular lateral incisor
b. crown is asymmetrical with a rounded distoincisal angle
c. mesial and distal heights of contour are at relatively equal distances from the cervical

A

a and c

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24
Q

Which of the following characteristics describe #26?

A

all of the above
A. distal contact area closer to cervical than mesial contact area
b. labial surface flatter than #7’s
c. appears twisted on its crown when viewed incisally

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25
Q

The lingual height of contour of a mandibular lateral incisor is found on which area?

A

cervical 1/3 of the crown

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26
Q

When looking at the facial or lingual aspect of all anterior teeth, they have a:

A

trapezoidal outline

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27
Q

Anterior teeth have six line angles; posterior teeth have eight line angles. All teeth have four point angles.

A

True

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28
Q

In the development of the permanent dentition, which of the following are true.
a. begins to develop at 4 months in utero
b. calcification starts at birth(of mandibular first molar)
c apices are complete 2-3 years after eruption

A

a,b,and c

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29
Q

The average mesiodistal width of a permanent maxillary central incisor is 8.5 mm

A

True

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30
Q

The letters used to identify the primary maxillary incisors are:

A

D,E,F,G

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31
Q

When a child looses teeth O and P, what permanent teeth erupt in their place.

A

24 and 25

32
Q

The incised edge takes an oblique course appearing as if twisted around the long axis of the root. this describes most succinctly the

A

mandibular lateral incisor-incisal view

33
Q

The labial surface of a canine is divided into ______ distinct lobes.

A

Three

34
Q

From the medial view, the most striking feature of the canine is the:

A

extreme thickness of the cervical third of both the crown and the root

35
Q

With the unervisal numbering system, the four permanent canines are recognized by these four numbers.

A

6,11,22, and 27

36
Q

The majority of the tooth is made up of this tissue.

A

Dentin

37
Q

How does the greatest labiolingual measurement of the mandibular canine compare with the greatest mesiodistal measurement?

A

Greater

38
Q

Identify the permanent anterior tooth that most frequently exhibits a bifurcated root.

A

Mandibular canine

39
Q

The dentition of a normally-developed 7-year old child usually consists of:

A

18 primary and 6 permanent teeth

40
Q

Characteristics common to all mandibular teeth include

(a) pronounced developmental grooves
(b) an inconspicuous cingulum
(c) well defined lobes
(d) incisor edges placed slightly lingually

A

b and c

41
Q

In viewing the mandibular permanent canine from the labial aspect, the medial cusp ridge is _______ the distal cusp ridge.

A

shorter than

42
Q

Which one of the following is not a line angle found on anterior teeth?

A

Disto-occusal

43
Q

All anterior teeth show traces of four lobes, three labially and one lingually. The lingual lobe is represented by the

A

Cingulum

44
Q

Assuming a normal eruption sequence, which of the following teeth would be last to erupt?

A

Maxillary permanent canines

45
Q

Which of the following premolars generally poses the greatest problem when root canal therapy, extraction or apicoectomy is being considered?

A

Maxillary first

46
Q

Ordinarily, a 6-year old child would have which teeth clinically visible?

A

All primary teeth and permanent first molars

47
Q

Which of the following statements is applicable to both the maxillary first premolar and the mandibular second premolar?

A

The lingual cusp is lower in height than the facial cusp

48
Q

A maxillary right canine may be distinguished from a maxillary left canine because

A

A maxillary right canine may be distinguished from a maxillary left canine because

49
Q

The maxillary canine erupts

A

after lateral incisor and first premolar

50
Q

The permanent mandibular canine root is sometimes bifurcated into

A

facial and lingual roots.

51
Q

The lingual cusp of the maxillary first premolar in inclined

A

mesially

52
Q

The premolar that most frequently has a single pit is the

A

maxillary second.

53
Q

Under normal conditions, the presence of mamelons in a 14-year old patient is indicative of

A

malocclusion

54
Q

Which of the following statements are applicable to the maxillary second premolar?

(a) Usually one root is present.
(b) The cusps may have vastly different forms.
(c) The root is extremely concave on the mesial aspect.
(d) The crown is extremely concave on the mesial surface.
(e) There may be a groove on the mesiolingual aspect of the crown.
(f) Facial and lingual cusps are approximately the same size.

A

a) and (f) only

55
Q

Which of the above statements are applicable to the mandibular first premolar?

A

a), (b), and (e

56
Q

A transverse ridge is formed by the junction of:

A

two triangular ridges

57
Q

The first permanent tooth to erupt is the:

A

mandibular first molar

58
Q

Which of the following is NOT a characteristic of the maxillary first premolar?

A

The occlusal surface has a wrinkled appearance because of accessory grooves arising from the central groove

59
Q

The mesial marginal ridge of most posterior teeth is located more occlusally than is the distal marginal ridge. Which tooth is most likely to be the exception?

A

Mandibular first premolar

60
Q

Which of the premolars is usually the smallest?

A

Mandibular first

61
Q

The smallest permanent tooth in the mouth is a

A

mandibular central incisor

62
Q

When viewed from the facial aspect, an identifying characteristic of maxillary first premolars is which of the following?

A

The mesial cusp slope is longer than the distal cusp slope

63
Q

When viewed from the mesial, an identifying characteristic of maxillary first premolar crowns is which of the following?

A

The presence of a mesial developmental depression

64
Q

The maxillary second premolar differs from the maxillary first premolar in which of the following characteristics?

a. A shorter mesial buccal cusp slope compared to the distal cusp slope
b. The absence of a mesial marginal groove
c. Buccal and lingual cusp lengths of equal length

A

a,b,and c

65
Q

The maxillary second premolar differs from the maxillary first premolar in which of the following characteristics?

a. A shorter mesial buccal cusp slope compared to the distal cusp slope
b. The absence of a mesial marginal groove
c. Buccal and lingual cusp lengths of equal length

A

a,b,and c

66
Q

The maxillary first premolar will typically demonstrate which of the following pulpal configuration ?

A

Double root with two pulp canals

67
Q

The occlusal form of the mandibular second premolar is highly variable. Which of the following are the most common forms of this tooth?

a. Two cusps- buccal and lingual
b. Three cusps- buccal, mesiolingual, and distoliwngual
c. .Two cusps- mesial and distal

A

a and b only

68
Q

The developmental grooves form a “Y” pattern in which of the following premolars?

A

mandibular second with three cusps

69
Q

All but one of the following is considered tooth tissue.

A

Cartilage

70
Q

With anterior teeth, what term is specific to canines?

A

Labial ridge

71
Q

Which universal numbers are used to identify the maxillary left molars?

A

14,15,16

72
Q

The premolar with the occlusal groove pattern that may simulate the letter “Y” is the

A

Mandibular second

73
Q

The anterior tooth exhibiting the most deviation in morphology is the

A

maxillary lateral incisor

74
Q

The earliest indication of a mixed dentition consists of the primary dentition and the

A

permanent mandibular first molar

75
Q

When in its proper position relative to the plane of occlusion, the crown of the mandibular second molar inclines

A

mesially and lingually

Dental Anatomy Midterm (1 decks)

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