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126 > Set 1 Review Questions > Flashcards

Set 1 Review Questions Flashcards

1
Q

odontogenous begins at what week in utero

A

6th-7th week

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2
Q

root is longest on 2nd max molar

A

lingual (palatal) root

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3
Q

what does set traits mean

A

differentiates between primary and permanent

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4
Q

what are type traits

A 
central incisors
lateral incisors
canines
first premolar
second premolar
first molar
second molar
third molar
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5
Q

what are arch traits

A

maxillary and mandibular

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6
Q

what are class traits

A

incisors, canines, premolars, molars

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7
Q

which traits are used to differentitate between lateral and central incisors

A

type

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8
Q

what is found only on anterior teeth

A

cingulum
incisal edge
lingual fossa
mammelons

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9
Q

what identification is given in INS (ISO) for the tooth identified as #19 in universal system

A

permanent mandibular 1st molar

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10
Q

part of tooth cannot be observed during routine oral exmainations

A

clinical root

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11
Q

tooth characterized by a strong transverse ridge separating the mesial and distal triangular fossa

A

maxillary first premolar

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12
Q

last succedaneous teeth to erupt

A

maxillary canine

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13
Q

cervical cross section of a one rooted tooth wil reveal what basic shape

A

ovid or oval

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14
Q

largest and longest root of max molars

A

lingual (palatal) root

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15
Q

approximately when is completion of root formation in a permanent tooth

A

1 to 3 years after erruption

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16
Q

odontoblasts are responsible for formation of what

A

dentin

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17
Q

last enamel layer that becomes mineralized and is produced by ameloblasts is the what

A

primary cuticle

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18
Q

most common relationship of cementum to enamel

A

cementum overlaps the enamel

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19
Q

characteristic of ugly duckling stage in development of the dentition

A 
(ugly duckling stage is the mixed dentition)
temporary edentulated areas
disproportionately sized teeth
varying clinical crown heights
crowding
enlarged and edematous/inflamed gingiva
different tooth colors
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20
Q

PDL located between what

A

cementum and alveolar bone and PDL space

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21
Q

Principle fibers of PDL receive majority of masticatory stress

A

Oblique fibers

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22
Q

Epithelium associated with border of lip

A

Keritinized stratified squamous epithelium

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23
Q

Most numerous papilla on tongue

A

Filiform

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24
Q

Infra hyoid muscles

A

Sternothyroid
Sternohyoid
Omihyoid
Thyrohyoid

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25
Q

Large opening for passage of spinal cord through occipital bone

A

Foramen magnum

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26
Q

_____ process consists of Zygoma, maxillary, and temporal bone

A

Zygomatic

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27
Q

Coronoid process exits for attachment if the _____ muscle

A

Temporalis

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28
Q

TMJ is a unique ______ joint because of its gliding and hinge movement

A

bilateral/dual

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29
Q

which muscle:

  1. originates on the pterygoid mandibular raphe
  2. pierced by stensons ducts
  3. inserts into orbicularis oris
A

buccinator mucscle

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30
Q

muscle serves as landmark to locate carotid, internal jugular, and cervical nodes

A

sternocleidomastoid muscle

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31
Q

taste sensation to anterior 3rd of tongue, travels on the 7th CN which branch

A

chorda tympani of facial

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32
Q

term best describes x-ray energy

A

photons

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33
Q

best describes most common type of radiation that is emitted from the anode of dental radiology machine tube head

A

bremsstrahlung

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34
Q

lead collimation restricts primary beam and extends the tube head to maximum diameter of

A

2.75in (7cm)

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35
Q

tissue makes up bulk of tooth

A

dentin

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36
Q

number of roots a tooth will develop determined by

A

hertwig’s epithelial root sheath

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37
Q

characteristics of permanent vs. primary teeth

pulp size

A

pulp cavity on primary teeth shows pulp chambers and pulp horns larger in proportion than permanent teeth (esp. mesial pulp horn)

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38
Q

characteristics of permanent vs. primary teeth

color

A

primary teeth whiter enamel than permanent b/c increased opacity of underlying dentin

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39
Q

characteristics of permanent vs. primary teeth

overall size

A

crown of primary tooth short in relation to total length
roots of primary teeth narrower and longer than crown teeth
crown to root ratio of primary teeth smaller than permanent crown to root ratio
dentin on primary teeth thinner than permanent

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40
Q

characteristics of permanent vs. primary teeth

mineralization of enamel

A

mineralization of primary teeth begins in utero at 13 to 16 weeks

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41
Q

what is primary crystalline material of bone

A

calcium hydroxyapatite

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42
Q

first mineralized tissue to appear in any developing tooth

A

dentin

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43
Q

derivative of ectoderm in oral cavity

A

oral epithelium

44
Q

attachment apparatus originates from

A

dental sac

45
Q

composition of normal enamel

A

96% inorganic material (or mineralized), 1% organic material, 3% water

46
Q

last layer of enamel produced by ameloblasts before tooth eruption occurs

A

primary cuticle

47
Q

permanent tooth most likely to exhibit cusp of carabelli

A

max first molar

48
Q

permanent premolar usually exhibits bifurcated root

A

max first premolar

49
Q

permanent premolar has functional buccal cusp and nonfunctional lingual cusp

A

mand first premolars

50
Q

a whole body MPD to a 34 yo RDH on an annual basis is

A

MPD= (34-18)x5000mrem=80,000mrem?

51
Q

what will be MPD if RDH (34yo) is pregnant

A

.5 milliseverts or?

52
Q

body tissue most sensitive to radiation

A

rapidly dividing cells such as WBC, gametes or germ cells

53
Q

body tissue least sensitive to radiation

A

specialized, like muscle or neural cells

54
Q

factors can reduce radiation exposure to pt.

A 
minimize exposure time
use fast film
maintain long source-object distance
utilize proper added filtration
utilize appropriate lead apron w/ thyroid collar
use rectangular vs round collimation
16in PID open ended
55
Q

main factor controls penetration of x-rays

A

kVp

56
Q

radiograph intensifying screens used for

A

extraoral radiography

57
Q

which PID or BID results in greatest reduction of radiation to pt

A

16in open ended rectangular PID; reduces by 70%

58
Q

paralleling technique produces image with

A

minimal distortion

59
Q

what type of bone loss describes reduction in height of intercrestal bone

A

horizontal bone loss- bone level parallel with CEJ

vertical bone loss- bone level @ angle to CEJ

60
Q

percentage of kinetic energy inside vacuum tube actually converted to x-radiation

A

1%

other 99% is heat

61
Q

what unit of radiation represents amount of radiation energy absorbed by tissue

A

gray (gy) or RAD

62
Q

example of electromagnetic radiation

A

visible ultraviolet lights
x-rays and gamma rays
travels in wavemotion and has energies with different wavelengths

63
Q

example of particulate radiation

A

alpha and beta particles
atomic nuclei
subatomic particles

64
Q

example of microwave radiations

A

infrared rays

65
Q

example of subatomic radiations

A

background radiation

66
Q

muscle group innervated by 7th CN

A

muscles of facial expression

67
Q

how many nerves innervated tongue

A 
V3 lingual
VII chorda tympani
IX glossopharyngeal
X vegus
XII hypoglossal
68
Q

tip of tongue burned; what nerve innervated

A

sensory V3 lingual

69
Q

taste sour; what nerve

A

IX glossopharyngeal

70
Q

taste sweet; what nerve

A

VII chorda tympani

71
Q

taste bitter; what nerve

A

IX glossopharyngeal

72
Q

taste salty

A

VII chorda tympani

73
Q

pt having difficulty protruding tongue; what nerve affected

A

XII hypoglossal

74
Q

bite tip of tongue, what nerve innervated

A

V3 lingual

75
Q

how many arches contribute to development of tongue

A

1st 4 branchial arches

mandibular, hyoid, 3 and 4

76
Q

most common type of cartilage

A

hyaline cartilage

77
Q

what are enzymes that break down tissues in patient suffering from periodontal disease

A

hyaluronidase

78
Q

site of steroid synthesis in cells

A

smooth ER (SER)

79
Q

term for material that undergoes process to prepare material to be phagocytized

A

oposins

80
Q

mA new time?

A

10

81
Q

reduce exposure

A

kVp & film speed

82
Q

pharynx nerves

A

IX and X

83
Q

parotid

A

pure serous

84
Q

pain from teeth from

A

trigeminal nerve

85
Q

1st mineralized tooth structure

A

dentin

86
Q

odontoblasts produce

A

dentin

87
Q

osteoclasts occupy

A

howship lacunae

88
Q

monocytes

A

macrophages

89
Q

skeletal muscle cells

A

voluntary

90
Q

myelination accomplishes

A

Shawn cells

91
Q

enamel tufts

A

weakened

92
Q

acellular cementum

A

cervical third

93
Q

gingival attachment

A

sulcular epithelium and JE

94
Q

gray matter

A

neuron bodies and synapse

95
Q

groove from occlusal surface to facial surface except

A

max 1st molar

96
Q

gracey 11/12

A

mesial surfaces of posterior teeth

97
Q

buccal mucosa

A

not kertitinized

98
Q

absorb long wave radiation

A

filter

99
Q

electrons x-ray production

A

tungsten target

100
Q

reduces operator exposure

A

distance

101
Q

electron displaced from orbit

A

ionization

102
Q

speed of electrons

A

kilivoltage

103
Q

15 impulses=

A

1/4 second

104
Q

electromagnetic radiation NOT

A

alpha and beta

105
Q

x-ray photons

A

bremsstrhlung

106
Q

what is posterior u-shaped radiopacity

A

zygoma

126 (15 decks)

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