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NAVEDTRA 14295B HOSPITAL CORPSMAN > 14295_CH7DentalAnatomy > Flashcards

14295_CH7DentalAnatomy Flashcards

1
Q

Three developmental periods?

A

Growth, Calcification, Eruption

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2
Q

Dental development begins?

A

5th/6th week - prenatal

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3
Q

Horseshoe shaped band?

A

Dental lamina

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4
Q

Growth period of development?

A

Bud, Cap, Bell

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5
Q

of buds per dental arch?

A

Usually 10

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6
Q

Buds for permanent teeth form when?

A

17 weeks - 5 yrs

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7
Q

Cap stage also known as?

A

Proliferation

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8
Q

Small nipple shaped elevation?

A

Dental papilla

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9
Q

Last period of growth?

A

Histodifferentiation or bell stage

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10
Q

Cells that form enamel?

A

Ameloblast

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11
Q

Cells that form dentin?

A

Odontoblast

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12
Q

Cells that form cementum?

A

Cementoblast

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13
Q

Tooth takes shape through _______ in the _______ phase?

A

Morphodifferentiation, Bell

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14
Q

Depositing of the matrix?

A

Apposition

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15
Q

Crown completion to tooth emerging?

A

3yrs (perm teeth)

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16
Q

Study of anatomy?

A

Histology

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17
Q

Tooth divided into how many parts?

A

2 : crown, root(s)

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18
Q

Crown divided into?

A

Anatomic, Clinical crown

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19
Q

Four or more roots?

A

Multirooted

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20
Q

Opening for blood/nerves?

A

Apical foramen

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21
Q

Covers anatomic crown and protects dentin?

A

Enamel

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22
Q

Enamel composition?

A

96% inorganic, 1% organic, 3% water

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23
Q

Enamel can endure how much crushing pressure?

A

1,000 lbs per sq inch

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24
Q

Enamel is composed of?

A

Millions of enamel rods or prisms

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25
Q

Constitutes largest portion of the tooth?

A

Dentin

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26
Q

Dentin is harder than ____ but softer than ______?

A

Bone, enamel

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27
Q

Dentin makeup?

A

70% inorganic, 30% organic and water

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28
Q

Covers roots of teeth?

A

Cementum

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29
Q

Cementum color?

A

light yellow (lighter than dentin)

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30
Q

Cementum makeup?

A

55% organic, 45% inorganic (mainly calcium & salt)

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31
Q

Duration of cementum formation?

A

Throughout life of tooth

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32
Q

Chamber containing dental pulp?

A

Pulp chamber

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33
Q

Coronal pulp and pulp horns located?

A

Crown

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34
Q

Radicular pulp located?

A

Root

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35
Q

Chief formation of pulp?

A

Formation of dentin

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36
Q

Provides sensation to tooth?

A

Pulp

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37
Q

Tissues that support the tooth are collectively called?

A

Periodontium

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38
Q

Periodontium consists of?

A

Cementum, alveolar process, preiodontal ligament, gingiva

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39
Q

Only tissue considered basic part of tooth AND component of periodontum?

40
Q

Area of attachment for periodontal ligament fibers?

41
Q

Alveolar process?

A

Bone where teeth are embedded

42
Q

Bone that divides sockets?

A

Interdental septum (Interradicular - when multi rooted teeth are present)

43
Q

More dense: mandibular or maxilla cortical plate?

A

Mandibular

44
Q

Spongy bone that lies in center of alveolar process?

A

Trabecular bone (Web like appearance on radiograph)

45
Q

Horseshoe shaped white line on radiograph?

A

Lamina dura

46
Q

Thin fibrous ligament that connects tooth to bony socket?

A

Periodontal ligament

47
Q

Three types of oral mucosa?

A

Masticatory, lining, specialized

48
Q

Keratinized tissue?

A

Tough protective outer layer

49
Q

Incisive papilla?

A

Pear-shaped

50
Q

) Palatine raphe?

A

Whitish midline streak

51
Q

Palatine rugae?

A

Wrinkles on roof of mouth

52
Q

Protects the alveolar process and periodontal ligament from bacterial invasion?

53
Q

Two types of gingiva?

A

Unattached, attached

54
Q

Free gingiva should be?

A

1-3mm wide

55
Q

First area to show signs of gingivitis?

A

Gingival margin

56
Q

Popcorn gets stuck in what part of gingiva?

57
Q

Triangular piece of gingiva between teeth?

58
Q

Attached gingiva may have what texture?

A

Orange peel

59
Q

Line where attached gingiva and alveolar mucosa meet?

A

Mucoginginal junction

60
Q

How many dentition periods are there?

A

3 (primary - 20 baby teeth, permanent - 32, mixed - during shedding of baby teeth)

61
Q

Teeth in the upper arch?

62
Q

Teeth in the lower arch?

A

Mandibular

63
Q

Each arch contain how many teeth?

64
Q

In a quadrant there are ___ anterior and ___ posterior teeth?

65
Q

Each molar has how many cusps?

66
Q

How are primary teeth identified on dental chart?

A

Capital letters A-T (A-J = Maxillary, K-T = Mandibular)

67
Q

What tooth surface is located next to numbers on the chart?

68
Q

Surface of tooth that faces lips/cheeks?

A

Facial (labial), buccal

69
Q

Surface closest to midline?

70
Q

Surface opposite mesial?

71
Q

Surface facing tongue?

72
Q

A tooth has how many proximal surfaces?

A

2 - mesial/distal

73
Q

Point where two adjacent teeth touch?

A

Contact point (resistance felt when flossing)

74
Q

Interproximal space not occupied (natural gap) is called?

75
Q

When is an embrasure called a diastema instead?

A

When there is no contact point between teeth

76
Q

The absence of one or more teeth causes?

A

Malocclusion

77
Q

Normal relationship of two teeth is called?

A

Key to occlusion

78
Q

Angles classification?

A

CLASS I - normal, CLASS II - short chin, CLASS III - long chin

79
Q

Study of form and shape of teeth?

A

Tooth morphology

80
Q

First permanent teeth to erupt?

A

24-25 (mandibular central incisors)

81
Q

Usually the longest teeth?

A

Maxillary cuspid

82
Q

“Bell-crowned” is used to describe the appearance of what tooth?

A

Mandibular first bicuspid

83
Q

5th cusp is known as?

A

Cusp of Carabelli

84
Q

Maxillary first molar has how many roots?

A

Three (lingual is largest)

85
Q

First permanent tooth to erupt?

A

Mandibular first molar

86
Q

Cusp?

A

Elevation of enamel

87
Q

Cingulum?

A

Convex mount, lingual aspect of anterior tooth

88
Q

Fissure?

A

Linear Fault

89
Q

Fossa?

A

Rounded or angular depression

90
Q

Two types of triangular fossae?

A

Mesial and distal

91
Q

Groove?

A

Small lineal depression on the surface of a tooth

92
Q

Gives the occlusal surface a wrinkled appearance?

A

Supplemental groove

93
Q

All teeth develop from four or five?

94
Q

Incisal edges of newly erupted anterior teeth (soon wears away)?

95
Q

Each cusp has how many ridges radiating from its tip?

96
Q

The only tooth on which an oblique ridge is found?

A

Maxillary first and second molars

97
Q

Valley formed by inclines of adjacent cusps or ridges?

NAVEDTRA 14295B HOSPITAL CORPSMAN (17 decks)

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