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Dental Anatomy > Quiz 1 Review > Flashcards

Quiz 1 Review Flashcards

1
Q

What is the Cementoenamel Junction (CEJ)?

A

Junction or separation between the crown and the root or cementum and enamel

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2
Q

What dental surface covers the root?

A

Cementum

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3
Q

What dental surface covers the crown?

A

Enamel

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4
Q

What are lingual heights of contour?

A

Raised contours on lingual surfaces of posterior teeth

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5
Q

What is the anatomical root?

A

Anatomical root: portion of tooth covered in cementum

Clinical root:

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6
Q

Anatomic crown vs. clinical crown

A

Anatomical crown: portion of tooth covered by enamel

Clinical crown: portion of tooth that is clinically visible, varies with age

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7
Q

Where are lingual fossae found?

A

canines

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8
Q

Supplemental (secondary) grooves

A
  1. line on the surface of a posterior tooth that does not divide the primary portions of a tooth
  2. Usually not named
  3. May not always appear consistently on a posterior tooth
  4. Separate a triangular ridge from a cuspal ridge
  5. Named according to their location
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9
Q

What are irregular depressions or concavities that are unique to the lingual surfaces of canines that divide the lingual fossae of canines into separate mesiolingual and distolingual fossae?

A

Lingual Fossae

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10
Q

What tooth is the last primary tooth to erupt?

A

maxillary secondary molar (A, J) at 29 months

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11
Q

What is the first primary tooth to erupt?

A

mandibular central incisor (P, O) at 8 months

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12
Q

Emersion vs. Eruption

A

Emersion: stage of tooth development as it first appears through gingiva
Eruption: continuous movement of tooth as it develops from its initial calcification stage until it reaches occlusal contact with a tooth in the opposing arch

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13
Q

When does the mixed dentition period begin?

A

emergence & eruption of the permanent mandibular 1st molar at age 6

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14
Q

When does the mixed dentition period end?

A

loss of the last primary tooth

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15
Q

What are the permanent 1st molars guided by?

A

primary 2nd molars

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16
Q

When do permanent teeth begin their eruptive movements?

A

after the crown has formed

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17
Q

What does premature loss of primary teeth lead to?

A

lack of space for permanent dentition

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18
Q

T/F dental neglect, congenital absence, or abnomalies will have an adverse effect on the eruption of permanent dentition

A

True

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19
Q

What is the first tooth to erupt in the maxillary arch?

A

1st molar

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20
Q

What is the order of maxillary tooth eruption?

A 
1st molar 
central incisor 
lateral incisor 
1st premolar 
2nd premolar 
canine
2nd molar 
3rd molar
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21
Q

At about 8 years of age what permanent teeth have not yet erupted in the mouth?

A

permanent 2nd molars
pre-molars
canines

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22
Q

What type of arch of alignment do humans have?

A

partially isognathous: partially symmetrical

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23
Q

What teeth have an anterior transverse ridge?

A

permanent maxillary molars (mainly 1st)

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24
Q

What is the anterior transverse ridge confluent with?

A

mesial marginal ridge, obliterating much of the mesial triangular fossa

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25
Q

Which arch is larger?

A

Maxillary arch

26
Q

Which arch is wider?

A

Maxillary arch

27
Q

Which arch has more issues with asthetics?

A

Maxillary arch

28
Q

Which of the tooth in the mandible deviates the least from the vertical axis (proximal reference)?

A

2nd premolar (6 degrees)

29
Q

Which tooth in the mandible deviates the most from the vertical axis (proximal reference)?

A

lateral incisor (23 degrees)

30
Q

Which of the tooth in the mandible deviates the least from the vertical axis (facial reference)?

A

lateral incisor (0 degrees)

31
Q

Which maxillary tooth contact only one tooth on the mandibular arch?

A

maxillary third molar

32
Q

Which mandibular tooth contact only one tooth on the maxillary arch?

A

mandibular central incisor

33
Q

Where is midline proximal contact point between?

A

Incisal third

34
Q

Where is the distal of central?

A

Junction of incisal and middle thirds

35
Q

What teeth have a 1 mm height of contour?

A

mandibular molar teeth

36
Q

What tooth deviates the most from the vertical axis (facial reference)?

A

Second molar (14 degrees)

37
Q

What is the proximal contact area distal of central?

A

junction of incisal and middle thirds

38
Q

What is the proximal contact area mesial of lateral?

A

junction of incisal and middle thirds

39
Q

What is the proximal contact area distal of lateral?

A

middle third

40
Q

What is the proximal contact area mesial of canine?

A

Junction of incisal and middle thirds

41
Q

What is the proximal contact area distal of canine?

A

middle third

42
Q

What is the mandibular facial surfaces height of contour?

A

0.5 mm in the cervical third

43
Q

What is the mandibular anterior teeth lingual surface amount of contour and location?

A

0.5 mm, cervical third

44
Q

What is the mandibular first premolar teeth lingual surface amount of contour and location?

A

0.5 mm, middle third

45
Q

What is the mandibular second premolar teeth lingual surface amount of contour and location?

A

0.75 mm, middle third

46
Q

What is the mandibular molar teeth lingual surface amount of contour and location?

A

1 mm, middle third

47
Q

Where does the cervical line curve?

A

in the coronal direction on the proximal surface

48
Q

What is the height of curvature of the cervical line?

A

measurement from the lowest point at the vertical line to the highest point in the middle of the proximal surface

49
Q

What teeth have the most measurable curvature?

A

anterior teeth

50
Q

What teeth have the least curvature?

A

molars

51
Q

On an individual tooth what side has the greatest curvature?

A

The curvature is always greatest on the mesial surface

52
Q

What is the curvature on the mesial side of the maxillary central?

A

3.5 mm (largest of all teeth)

53
Q

What is the curvature of the distal side of the maxillary central?

A

2.5 mm

54
Q

Where does periodontal disease affect the integrity of the periodontal fibers?

A

level of the cervical line (alveolar crest)

55
Q

What are imbrication lines?

A

negative anatomy resulting from an overlapping of enamel at the cervical third, run parallel to the cervical line

56
Q

What is perikymata?

A

positive anatomy that define the imbrication lines

57
Q

Where are imbrication lines and perikymata mostly seen?

A

permanent maxillary central incisors

58
Q

On mandibular teeth what surface are the contact areas slightly more towards?

A

facial

59
Q

On mandibular teeth are mesial outlines of crowns more or less curved than distal outline?

A

mesial outlines are less curved than distal

60
Q

On mandibular teeth are lingual or facial cusps more pointed?

A

lingual cusps are more pointed

61
Q

On mandibular teeth are mesial or distal cusps larger?

A

mesial cusps are larger

62
Q

On mandibular teeth are mesial marginal ridges or distal marginal ridges taller?

A

mesial marginal ridge are taller

Dental Anatomy (12 decks)

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