Exam 1 Flashcards

1
Q

Deciduous Mandibular Central Incisor comes in when?

A

6 months

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2
Q

**First primary teeth appears in dentition about

A

6 months

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3
Q

Newly primary teeth form prenatally at 14 weeks called

A

tooth bud forming

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4
Q

Deciduous teeth are completed postnatally at what age?

A

3 years of age

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5
Q

Transition (mixed dentition)

A

in which there is a mixture of deciduous (baby) and succedaneous
(permanent) teeth present.

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6
Q

When does transition/mixed dentition end?

A

11-12 years old. Ends when all the deciduous teeth have been shed.

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7
Q

Succedaneous

A

used to describe a successor dentition

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8
Q

Are molars succedaneous teeth?

A

NO

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9
Q

What numbering system is used in dentistry?

A

Universal

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10
Q

Primary Maxillary teeth, beginning with the right second molar, number them

A

letters A through J

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11
Q

Primary mandibular teeth, beginning with the left mandibular second molar, number them

A

letters K through T

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12
Q

The crown is covered with

A

enamel

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13
Q

the root portion is covered with

A

cementum

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14
Q

The crown and root join at the

A

CEJ *cemento-enamel junction

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15
Q

CEJ *cemento-enamel junction is also called

A

cervical line

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16
Q

The main bulk of the tooth is composed of

A

dentin

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17
Q

Hard tissues are

A

enamel, dentin, cementum

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18
Q

pulp chamber is in

A

crown portion mainly

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19
Q

pulp canal

A

is in the root

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20
Q

Pulp is hard/soft tissue

A

soft

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21
Q

What does pulp do?

A

furnishes the blood and nerve supply

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22
Q

alveolar process

A

That portion of the jaw serving as support for the tooth

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23
Q

alveolus

A

The bone of the tooth socket

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24
Q

Surfaces in incisors and canine is what kind of ridge

A

4 surfaces in 1 ridge

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25
Q

Premolars and molars have how many surfaces?

A

5

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26
Q

**Labial

A

toward the lips are called labial surfaces in incisors and canine (anteriors ONLY)

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27
Q

buccal

A

In the premolars and molars only, those facing the cheek (posterior ONLY)

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28
Q

**Labial and buccal surfaces are what kind of surfaces?

A

Facial surfaces

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29
Q

occlusal surfaces

A

biting edge surfaces (posterior teeth)

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30
Q

incisal surfaces

A

Edge of anterior teeth.

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31
Q

Periodontal ligament

A

fibrous attachment of the tooth cementum to alveolar bone

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32
Q

Gingiva

A

“gums”, fibrous tissue covered by a mucous membrane, covers alveolar process and
surrounds the necks of the teeth.

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33
Q

cusp

A

an elevation on the (enamel) , making up the occlusal

surfaces. Only found on posterior teeth.

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34
Q

tubercle

A

a smaller elevation on some portion of the crown produced by an extra formation of
enamel

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35
Q

cingulum

A

the lingual lobe of an anterior tooth (incisor). It makes up the bulk of the cervical
third of the lingual surface.

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36
Q

ridge

A

linear elevation of enamel. Ridges are found on all teeth* and all teeth have 2 marginal
ridges**

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37
Q

Marginal ridges

A

rounded borders of the enamel that form the mesial
or distal margins of the occlusal surfaces of posterior teeth, as well as incisal surfaces of anterior
teeth (*remember, found on ALL teeth)

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38
Q

Triangular ridges

A

descend from the tips of the cusps of molars and premolars toward the
*central part of the *occlusal surfaces

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39
Q

transverse ridge

A

the union/ combination of *two triangular ridges (buccal and lingual side)
crossing transversely the surface of a posterior tooth

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40
Q

oblique ridge

A

a ridge crossing obliquely the occlusal surfaces of maxillary 1st molars as
elevation. Formed by the union of the triangular ridge of the DB cusp and ML cusp*

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41
Q

Cusp ridge:

A

every cusp have 4 ridges that extend from the cusp tip to 4 directions (mesial, distal,
buccal and lingual)

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42
Q

fossa

A

is an irregular depression or “concavity” or deep valley.

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43
Q

Central fossae

A

on the occlusal surface of molars.

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44
Q

Lingual fossa:

A

located on the lingual surface of incisor teeth, depression

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45
Q

Triangular fossae

A

found on molars and premolars on the occlusal mesial or distal ridges.

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46
Q

sulcus

A

long depression or valley in the surface of a tooth between ridges and cusps, the
inclines of which meet at an angle.

47
Q

developmental groove

A

a shallow groove or line between the primary parts of the crown or
root. Union of 2 lobes

48
Q

supplemental groove,

A

less distinct, is also a shallow linear depression on the surface of a tooth,
but it is supplemental to a developmental groove (kind of like branching of it). have wrinkled
appearances

49
Q

Pits

A

small pinpoint deepest depressions located at the junction of developmental grooves or at
terminals of those grooves. For example, central pit is a term used to describe a landmark in the
central fossa of molars

50
Q

lobe

A

one of the primary sections of formation in the development of the crown. Usually seen
only in deciduous teeth. Cusps and mamelons are representative of lobes.

51
Q

mamelon

A

any one of the three rounded protuberances found on the incisal ridges of newly
erupted incisor teeth. Considered to be a feature of the permanent incisors,

52
Q

Cuspal Gothic Pyramid

A
  1. Mesial cusp ridge
  2. Distal cusp ridge
  3. Buccal cusp ridge
  4. Lingual or triangular cusp ridge
53
Q

LINES ANGLE:

A

formed by the junction of two surfaces and from the combination of the two surfaces
that join.

54
Q

Example of lines angle

A

on an anterior tooth, the junction of the mesial and labial surfaces is called the
mesiolabial line angle.

55
Q

POINT ANGLE:

A

junction of three surfaces

56
Q

The point angles of the anterior teeth are

A

mesiolabioincisal -mesiolinguoincisal

- distolabioincisal -distolinguoincisal

57
Q

The point angles of the posterior teeth are

A

mesiobucco-occlusal -mesiolinguo-occlusal

- distobucco-occlusal -distolinguo-occlusal

58
Q

1st Mandibular molar is the

A

6 years molar

59
Q

cusp of carabelli ONLY on

A

1st max molar

60
Q

Variability

A

“normal” morphology and variability in a

functional, esthetic, and statistical sense

61
Q

Malformations

A

Dental anomalies most often seen in 3rd molars, max

laterals, mandibular 2nd premolars

62
Q

Dental lamina

A

epithelial thickening in area

where teeth will form

63
Q

Bud stage how many teeth appear?

A

20 buds appear

64
Q

Cap stage

A

invagination; looks like a cap

65
Q

Bell stage

A

more invagination, can see crown

form, DEJ.

66
Q

Hertwig’s epithelial root sheath (HERS)

A

increasing # of epithelial cells located at the
cervical loop of the enamel organ in a
developing tooth

67
Q

Permanent dentition completed when?

A

By 25 counting 3rd molar

68
Q

Primary teeth calcification begins in

A

13-16 weeks

69
Q

all teeth have begun to calcify at what age

A

18-20 weeks

70
Q

Primary crown formation takes
____ years from initial
calcification to root completion

A

2-3 years

71
Q

Sometimes infants born with

A

Mandibular lateral incisors

72
Q

Sequence of eruptionnprimary

A
Central incisor
Lateral incisor
1st molar
Canine
2nd molar
73
Q

Early loss of Primary teeth may lead to

A

Lack of space for permanent dentition

74
Q

Some primary teeth in use until about

A

12yrs Old

75
Q

Premature loss of primary teeth, retention of primary teeth,
congenital absence of teeth, dental anomalies, and
insufficient space play a role in the

A

initiation and

development of abnormal occlusion.

76
Q

How many teeth in permanent dentition?

A

32

77
Q

How many teeth in primary dentition?

A

20

78
Q

Permanent incisors, canines, and premolars called

A

Succedaneous teeth

79
Q

General rule is

A

mandibular permanent teeth erupt before

maxillary

80
Q

Permanent teeth erupt by

A

causing resorption of the primary

tooth’s root which becomes loose and is exfoliated

81
Q

2nd molar erupts at about

A

12 yrs

82
Q

3rd molars erupt at about

A

17 yrs

83
Q

Tooth size mostly depends

A

Genetics

84
Q

Dental Pulp-connective tissue contains

A
Arteries
Veins
Lymphatic system
Nerves
Apical foramen-opening at the apex
85
Q

Dental age

A

Based on formation or eruption of teeth

86
Q

Maxillary molars have how many roots?

A

3

87
Q

FDI NUMBERING SYSTEM

A

The first digit in the number is related to the quadrant (UR=1)(UL=2)(LR=3)(LL=4) and the second digit refers to the number of teeth back. For example UR first molar is #16.

88
Q

Palmer Method

A

Split into 4 quadrants (UL,UR,LR,LL) and then split down midline. Numbering 1-8 each quadrant. Ortho method.

89
Q

Do anterior teeth have cusp?

A

No, they have incisal edges

90
Q

Primary dentition formula

A

I 2/2, C 1/1, M 2/2=10

91
Q

What to. Remember about dentition formula?

A

Only on one side, so you have to double the #

92
Q

Permanent dentition formula

A

I 2/2, C 1/1, P 2/2, M 3/3=16. remember to double #

93
Q

4 teeth that have mesial surfaces that contact are

A

Max and mand central incisors

94
Q

Trifurnication

A

3 roots

95
Q

What is found on all teeth

A

Marginal ridges

96
Q

Primary Mandibular Central incisors eruption age

A

6-10 months

97
Q

Primary Maxillary Central incisors eruption age

A

10 months

98
Q

Primary Maxillary Lateral incisor

A

11 months

99
Q

Primary Mandibular lateral incisor

A

13 months

100
Q

Primary Maxillary First molar eruption age

A

16 months

101
Q

Primary Max/Mand Canines

A

19 months

102
Q

Primary Second molars eruption age

A

27 months

103
Q

Permanent First Molars eruption age

A

6-7 years

104
Q

Permanent Mandibular Central

A

6-7 years

105
Q

Perm Mand laterals

A

7-8 years

106
Q

Perm Max centrals

A

7-8 years

107
Q

Perm Max lateral

A

8-9 years

108
Q

Perm Mandibular Canine

A

9-10 years

109
Q

Perm Mand and Max 1st Premolars

A

10-11 years

110
Q

Perm Mand and Max 2nd premolars

A

11-12 years

111
Q

Perm Max canine

A

12 years

112
Q

Perm second molar

A

12 years

113
Q

Perm third molar

A

17-21 years