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Dental > Chapter 3: Tooth Origin and Formation > Flashcards

Chapter 3: Tooth Origin and Formation Flashcards

1
Q

Tooth arrangement

A

Dentition

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2
Q

Permanent teeth

A

Succedaneous

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3
Q

Scale off

A

Exfoliate

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4
Q

Dentition contains both deciduous and secondary teeth

A

Mixed dentition

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5
Q

Teeth of various shapes

A

Heterodont

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6
Q

Formation and origin of the tooth

A

Odontogenesis

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7
Q

First, or bud, stage of development; begins at the firth or sixth week in utero

A

Initiation

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8
Q

Membrane band containing organs of future teeth

A

Dental lamina

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9
Q

Mucous tissue covering and connective tissue layer

A

Epithelium

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10
Q

Second stage of development; reproduction of new parts; begins during the fourth or fifth month in utero

A

Proliferation

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11
Q

Third stage of development; acquiring different functions; causes changes in the tooth bud shape and makeup

A

Differentiation

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12
Q

Branching into different tissues

A

Histodifferentiation

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13
Q

Changing into a different shape

A

Morphodifferentiation

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14
Q

Fourth stage of development; maturation stage; mineral salts and organic matter are set in place for tooth formation

A

Apposition

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15
Q

Fifth phase in development; hardening and setting of tooth tissues

A

Calcification

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16
Q

Sixth stage of development; “cutting of the teeth”; tooth moves toward oral cavity and enters through tissues

A

Eruption

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17
Q

Final/seventh stage of development; wearing away occurs where teeth interact through mastication and speech

A

Attrition

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18
Q

Enamel organ; gibes the tooth its covering

A

Dental organ

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19
Q

Makes up the inner structures of the tooth, such as the dentin and pulp

A

Dental papilla

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20
Q

Makes up the surrounding covering for the dental organ and papilla

A

Dental sac

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21
Q

Outer layer of development

A

Ectoderm

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22
Q

Middle layer of tooth

A

Mesoderm

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23
Q

Connective tissue cells

A

Mesenchyme

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24
Q

First set/baby teeth

A

Deciduous teeth

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25
Q

Removal of hard tooth surface

A

Resorption

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26
Q

Cells that bring about absorption of primary tooth roots

A

Odontoclasts

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27
Q

Cells that destroy tooth cementum

A

Cementoclasts

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28
Q

Cells that destroy or cause absorption of bone tissue

A

Osteoclasts

29
Q

Tooth irregularities or abnormalities

A

Anomalies

30
Q

Tooth covering that is 96% inorganic

A

Enamel

31
Q

Tissue layer covering the tooth surfaces that wears away soon after eruption; aka Nasmyth membrane

A

Cuticle

32
Q

Lines in enamel

A

Lines/stripes/striae of Retzius

33
Q

Developmental cracks of imperfections in enamel tissue extending toward or into the dentin

A

Lamellae

34
Q

Irregular grouping of undercalcified enamel

A

Tuft

35
Q

Tooth covering that is 96% inorganic

A

Enamel

36
Q

Tissue layer covering the tooth surfaces that wears away soon after eruption; aka Nasmyth membrane

A

Cuticle

37
Q

Lines in enamel

A

Lines/stripes/striae of Retzius

38
Q

Developmental cracks of imperfections in enamel tissue extending toward or into the dentin

A

Lamellae

39
Q

Irregular grouping of undercalcified enamel

A

Tuft

40
Q

End areas of Union for odontoblasts and

enamel rod endings

A

Spindles

41
Q

Slightly curved prism like structures that extend from the dentinoenamel junction to the outer surface; slightly packed with an organic matrix material to give a smooth, hard surface

A

Rods

42
Q

Enamel rod twisting and curving within the tooth tissue

A

Gnarled enamel

43
Q

The main tissue of tooth surrounding the pulp

A

Dentin

44
Q

Small, s-shaped tubes or channels extending from the dentinoenamel wall to the pulp chamber; transmits pain stimuli and nutrition

A

Tubules

45
Q

Ly within tubules and help the dentin to nourish and register sensation

A

Fibers

46
Q

Soft, vascular tooth tissue

A

Pulp

47
Q

Pointed edges or boundaries of the pulp chamber extending toward the surface

A

Pulp horns

48
Q

Approximately 55% inorganic, rough in texture, and meets the enamel tissue at the neck of the tooth

A

Cementum

49
Q

Cement-enamel union

A

Cementoenamel junction

50
Q

Connective tissue fibers of the periodontal ligament

A

Sharpey’s fibers

51
Q

Irregular cementum-forming cells

A

Cementocytes

52
Q

Tiny cavities that may contain cementocytes

A

Lacuna

53
Q

Small channels or canals in cementum

A

Canaliculi

54
Q

Provides anchorage, support, and protection of the teeth

A

Periodontum

55
Q

Membrane and fibers that anchor the tooth in the socket

A

Periodontal tissue

56
Q

Bone, bony sockets, or crypts for teeth placement in the maxilla and the mandibular bone

A

Alveolar tissue

57
Q

Mucous tissue surrounding the teeth; also gives protection to the teeth and underlying tissues

A

Gingiva

58
Q

Connective tissues arranged in bundles and dense fibrous tissue groupings

A

Periodontal membranes/ligaments

59
Q

Inner and outer growth on the alveolar bone

A

Cortical plate

60
Q

Lines the alveolar socket

A

Lamina dura

61
Q

Gum tissue

A

Gingiva

62
Q

Study of teeth in general

A

Odontology

63
Q

The study of tooth form and shape

A

Morphology

64
Q

Single-rooted anterior teeth with a sharp cutting edge

A

Incisors

65
Q

Single-rooted anterior teeth at the corners of the mouth

A

Cuspids (canines)

66
Q

Fourth and fifth teeth from the center of the mouth

A

Premolars

67
Q

Most posterior teeth

A

Molars

68
Q

Three roots

A

Trifurcated

69
Q

Two roots

A

Bifurcated

Dental (10 decks)

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