Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

NBDE I > Dental Anatomy Miscellaneous > Flashcards

Dental Anatomy Miscellaneous Flashcards

1
Q

when the mandible moves from CO to edge-to-edge, the condyles move ___ and ___

A

forward and downward

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what directions do non-working condyles move?

A

downward, forward, and medial

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

anterior guidance plays the greatest role in discluding the posterior teeth during what movement?

A

latero-protrusive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

teeth are in contact in intercuspal position during what type of swallowing?

A

non-masticatory

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

tooth contact almost exclusively determines ___ position

A

intercuspal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

centric relation is a ___-guided position

A

ligament

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

centric occlusion is a ___-guided position

A

tooth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

in posselt’s envelope of motion, maximum intercuspal position is the most ___ point

A

superior

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what is another term for centric occlusion?

A

intercuspal position

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

when the mandible moves from centric occlusion to edge-to-edge, the condyles move ___ and ___

A

forward and downward

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what is the bennett movement

A
  • the side shift of the mandible

- the bodily shift of the mandible toward the working condyle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

bennett occurs during which stage of lateral movement?

A

the earliest stage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

physiological rest position is also known as ___

A

postural position

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

postural position is ___mm below ICP/CO

A

2-4mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

is postural/physiological position a border position?

A

no

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

the mandibular postural position is determined almost exclusively by ___

A

the behavior of the mandibular musculature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

if you move from physiological/postural position from CO, what muscles are being used?

A

anterior fibers of the temporalis (elevates the mandible)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

which curve (spee or wilson) is the anterior-posterior curvature of the occlusal surfaces as seen in a facial/buccal view?

A

spee

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

the usual overjet is ___mm

A

2-4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

___ is horizontal overlap, whereas ___ is vertical overlap

A

overjet, overbite

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

the hardest dental tissue is ___

A

enamel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

what is the main component of enamel?

A

inorganic matter (hydroxyapatite, NO collagen)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

the direction of enamel rods in the cervical 3rd of permanent teeth is in a ___ direction, whereas it is in a ___ direction in deciduous teeth

A
  • permanent = gingival direction

- primary = apical direction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

___ is the result of normal enamel apposition seen on the surface of teeth, whereas ___ is seen on the inside

A
  • perikymata

- striae of retzius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

for multirooted teeth, dentin continues to form most rapidly at the ___ and ___ of the pulp chamber

A

floor and roof

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

caries stimulates the production of ___ dentin

A

tertiary

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

the percentage of dentin that is organic is ___%

A

20-30%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

the PRIMARY function of the dental pulp is to ___

A

form dentin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

the dental papilla forms ___ and ___

A

dentin and pulp (think dental papilla = DP = dentin pulp)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

the dentin that is most highly mineralized is ___ or ___

A

intra or peritubular dentin

31
Q

the DEJ occurs at the junction of the ___ and the ___

A

dental papilla and the inner enamel epithelium

32
Q

the cells in the dentin that are in contact with the inner enamel epithelium are ___

A

odontoblasts

33
Q

the softest dental tissue is ___

A

cementum

34
Q

what are the 2 types of cementum?

A

cellular and acellular

35
Q

cementum is (thinner/thicker) and (cellular/acellular) at the apical 3rd, whereas it is (thinner/thicker) and (cellular/acellular) at the coronal 2/3

A
  • apical 1/3 = thicker and cellular

- coronal 2/3 = thinner and acellular

36
Q

when viewed from the occlusal, the arrangement of the teeth are ___

A

parabolic

37
Q

viewed from the occlusal, the 4 posterior teeth in the mandibular arch are aligned ___

A

in a straight line

38
Q

the number of lobes that form the posterior teeth coincides with the number of ___

A

cusps

39
Q

all teeth develop from 4 lobes except ___ and ___

A

permanent 1st molars and the mandibular 2nd premolar 3-cusp type (develop from 5 lobes)

40
Q

3rd molars may develop from ___ or ___ lobes

A

4 or 5

41
Q

the mandibular 1st premolar has its mesial marginal ridge more ___ than the distal marginal ridge

A

cervical

42
Q

T or F:

all teeth have distal and mesial marginal ridges

A

true

43
Q

___ separate cusp ridges from marginal ridges

A

developmental grooves

44
Q

a ___ ridge results from the union of the facial and lingual triangular ridges

A

transverse

45
Q

there are a total of ___ teeth in the permanent dentition that normally have cingula

A
  • 12 (6 upper anteriors and 6 lower anteriors)

- in other words, all anterior teeth generally have cingula

46
Q

the occlusal table of a posterior tooth makes up ___% of the total FL dimension

A

55-65%

47
Q

what 4 tissues make up the periodontium?

A

gingiva + PDL + cementum + alveolar bone

48
Q

the epithelial attachment is also called the ___

A

junctional epithelium

49
Q

the epithelial attachment is often considered part of a tooth’s ___

A

periodontium

50
Q

the PDL is ___mm wide; in old age, thickness decreases to about ___mm due to the deposition of cementum and bone

A

0.2mm, 0.1mm

51
Q

PDL fibers attach the ___ to the ___

A

tooth (cementum) to the dental alveolar bone

52
Q

which fibers attach the tooth (cementum) to gingiva?

A

gingival fibers

53
Q

___ is the predominant connective tissue for periodontal ligament fibers

A

type I collagen

54
Q

the ___ fibers of the PDL provide the major support for a tooth during function

A

oblique

55
Q

the ___ fibers of the PDL reduce the likelihood of forceful impaction into the alveolus

A

oblique

56
Q

oblique fibers of the PDL are most likely to be found in what area of the root?

A

middle 3rd

57
Q

transseptal fibers are ___ fibers

A

gingival (NOT periodontal)

58
Q

___ fibers extend from tooth to tooth

A

transseptal

59
Q

the pulp chamber of a mature tooth contains ___ and ___

A

blood vessels and nerves

60
Q

approximately ___% of permanent root formation is completed at the time the tooth erupts

A

50%

61
Q

the apex of a tooth is fully formed how long after it erupts in the mouth?

A

2-3 years

62
Q

what are the functions of the dental pulp?

A
  • PRIMARY function is dentin formation

- other functions include supply nutrients and transmit sensory stimuli

63
Q

all teeth have FACIAL height of contours in the cervical 1/3, except for ___

A

mandibular molars

64
Q

all anterior teeth have LINGUAL height of contours in the ___

A

cervical 1/3

65
Q

all posterior teeth have lingual height of contours in the middle 1/3 except the ___

A

mandibular 2nd premolar, which is in the occlusal 1/3

66
Q

the cervical line of permanent teeth has the greatest depth of curvatures on the ___ aspect

A

mesial

67
Q

what are the general rules for the curvature of the cervical line?

A

dips deeper on…

  • anterior teeth than posterior
  • maxilla than mandible
  • M than D
68
Q

the curvature of the cervical line is greatest on which permanent tooth?

A

maxillary central incisor (M aspect)

69
Q

___ is an excess of calcified tissue (cementum) formation at the root apex

A

hypercementosis

70
Q

supernumerary teeth, when seen in the maxilla, are usually found where?

A
  • between the centrals (mesiodens)

- 4th molars

71
Q

___ is when cementum of two teeth join together

A

concrescence

72
Q

___ is a developmental abnormality characterized by the presence of fewer teeth than usual

A

oligodontia

73
Q

___ is the condition of missing all teeth

A

anodontia

NBDE I (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions