Set 1 Review Questions Flashcards
(106 cards)
1
Q
odontogenous begins at what week in utero
A
6th-7th week
2
Q
root is longest on 2nd max molar
A
lingual (palatal) root
3
Q
what does set traits mean
A
differentiates between primary and permanent
4
Q
what are type traits
A
central incisors lateral incisors canines first premolar second premolar first molar second molar third molar
5
Q
what are arch traits
A
maxillary and mandibular
6
Q
what are class traits
A
incisors, canines, premolars, molars
7
Q
which traits are used to differentitate between lateral and central incisors
A
type
8
Q
what is found only on anterior teeth
A
cingulum
incisal edge
lingual fossa
mammelons
9
Q
what identification is given in INS (ISO) for the tooth identified as #19 in universal system
A
permanent mandibular 1st molar
10
Q
part of tooth cannot be observed during routine oral exmainations
A
clinical root
11
Q
tooth characterized by a strong transverse ridge separating the mesial and distal triangular fossa
A
maxillary first premolar
12
Q
last succedaneous teeth to erupt
A
maxillary canine
13
Q
cervical cross section of a one rooted tooth wil reveal what basic shape
A
ovid or oval
14
Q
largest and longest root of max molars
A
lingual (palatal) root
15
Q
approximately when is completion of root formation in a permanent tooth
A
1 to 3 years after erruption
16
Q
odontoblasts are responsible for formation of what
A
dentin
17
Q
last enamel layer that becomes mineralized and is produced by ameloblasts is the what
A
primary cuticle
18
Q
most common relationship of cementum to enamel
A
cementum overlaps the enamel
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
20
Q
PDL located between what
A
cementum and alveolar bone and PDL space
21
Q
Principle fibers of PDL receive majority of masticatory stress
A
Oblique fibers
22
Q
Epithelium associated with border of lip
A
Keritinized stratified squamous epithelium
23
Q
Most numerous papilla on tongue
A
Filiform
24
Q
Infra hyoid muscles
A
Sternothyroid
Sternohyoid
Omihyoid
Thyrohyoid
25
Large opening for passage of spinal cord through occipital bone
Foramen magnum
26
_____ process consists of Zygoma, maxillary, and temporal bone
Zygomatic
27
Coronoid process exits for attachment if the _____ muscle
Temporalis
28
TMJ is a unique ______ joint because of its gliding and hinge movement
bilateral/dual
29
which muscle:
1. originates on the pterygoid mandibular raphe
2. pierced by stensons ducts
3. inserts into orbicularis oris
buccinator mucscle
30
muscle serves as landmark to locate carotid, internal jugular, and cervical nodes
sternocleidomastoid muscle
31
taste sensation to anterior 3rd of tongue, travels on the 7th CN which branch
chorda tympani of facial
32
term best describes x-ray energy
photons
33
best describes most common type of radiation that is emitted from the anode of dental radiology machine tube head
bremsstrahlung
34
lead collimation restricts primary beam and extends the tube head to maximum diameter of
2.75in (7cm)
35
tissue makes up bulk of tooth
dentin
36
number of roots a tooth will develop determined by
hertwig's epithelial root sheath
37
characteristics of permanent vs. primary teeth
| pulp size
pulp cavity on primary teeth shows pulp chambers and pulp horns larger in proportion than permanent teeth (esp. mesial pulp horn)
38
characteristics of permanent vs. primary teeth
| color
primary teeth whiter enamel than permanent b/c increased opacity of underlying dentin
39
characteristics of permanent vs. primary teeth
| overall size
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
40
characteristics of permanent vs. primary teeth
| mineralization of enamel
mineralization of primary teeth begins in utero at 13 to 16 weeks
41
what is primary crystalline material of bone
calcium hydroxyapatite
42
first mineralized tissue to appear in any developing tooth
dentin
43
derivative of ectoderm in oral cavity
oral epithelium
44
attachment apparatus originates from
dental sac
45
composition of normal enamel
96% inorganic material (or mineralized), 1% organic material, 3% water
46
last layer of enamel produced by ameloblasts before tooth eruption occurs
primary cuticle
47
permanent tooth most likely to exhibit cusp of carabelli
max first molar
48
permanent premolar usually exhibits bifurcated root
max first premolar
49
permanent premolar has functional buccal cusp and nonfunctional lingual cusp
mand first premolars
50
a whole body MPD to a 34 yo RDH on an annual basis is
MPD= (34-18)x5000mrem=80,000mrem?
51
what will be MPD if RDH (34yo) is pregnant
.5 milliseverts or?
52
body tissue most sensitive to radiation
rapidly dividing cells such as WBC, gametes or germ cells
53
body tissue least sensitive to radiation
specialized, like muscle or neural cells
54
factors can reduce radiation exposure to pt.
```
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
main factor controls penetration of x-rays
kVp
56
radiograph intensifying screens used for
extraoral radiography
57
which PID or BID results in greatest reduction of radiation to pt
16in open ended rectangular PID; reduces by 70%
58
paralleling technique produces image with
minimal distortion
59
what type of bone loss describes reduction in height of intercrestal bone
horizontal bone loss- bone level parallel with CEJ
| vertical bone loss- bone level @ angle to CEJ
60
percentage of kinetic energy inside vacuum tube actually converted to x-radiation
1%
| other 99% is heat
61
what unit of radiation represents amount of radiation energy absorbed by tissue
gray (gy) or RAD
62
example of electromagnetic radiation
visible ultraviolet lights
**x-rays** and gamma rays
travels in wavemotion and has energies with different wavelengths
63
example of particulate radiation
alpha and beta particles
atomic nuclei
subatomic particles
64
example of microwave radiations
infrared rays
65
example of subatomic radiations
background radiation
66
muscle group innervated by 7th CN
muscles of facial expression
67
how many nerves innervated tongue
```
V3 lingual
VII chorda tympani
IX glossopharyngeal
X vegus
XII hypoglossal
```
68
tip of tongue burned; what nerve innervated
sensory V3 lingual
69
taste sour; what nerve
IX glossopharyngeal
70
taste sweet; what nerve
VII chorda tympani
71
taste bitter; what nerve
IX glossopharyngeal
72
taste salty
VII chorda tympani
73
pt having difficulty protruding tongue; what nerve affected
XII hypoglossal
74
bite tip of tongue, what nerve innervated
V3 lingual
75
how many arches contribute to development of tongue
1st 4 branchial arches
| mandibular, hyoid, 3 and 4
76
most common type of cartilage
hyaline cartilage
77
what are enzymes that break down tissues in patient suffering from periodontal disease
hyaluronidase
78
site of steroid synthesis in cells
smooth ER (SER)
79
term for material that undergoes process to prepare material to be phagocytized
oposins
80
mA new time?
10
81
reduce exposure
kVp & film speed
82
pharynx nerves
IX and X
83
parotid
pure serous
84
pain from teeth from
trigeminal nerve
85
1st mineralized tooth structure
dentin
86
odontoblasts produce
dentin
87
osteoclasts occupy
howship lacunae
88
monocytes
macrophages
89
skeletal muscle cells
voluntary
90
myelination accomplishes
Shawn cells
91
enamel tufts
weakened
92
acellular cementum
cervical third
93
gingival attachment
sulcular epithelium and JE
94
gray matter
neuron bodies and synapse
95
groove from occlusal surface to facial surface except
max 1st molar
96
gracey 11/12
mesial surfaces of posterior teeth
97
buccal mucosa
not kertitinized
98
absorb long wave radiation
filter
99
electrons x-ray production
tungsten target
100
reduces operator exposure
distance
101
electron displaced from orbit
ionization
102
speed of electrons
kilivoltage
103
15 impulses=
1/4 second
104
electromagnetic radiation NOT
alpha and beta
105
x-ray photons
bremsstrhlung
106
what is posterior u-shaped radiopacity
zygoma
