A.radiolucent; first molar
B.radiopaque; canine
C.radiopaque; first molar
D.radiolucent; canine
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B.radiopaque; canine
The inverted Y is a radiopaque line above the maxillary canine.
Which types of cells are more sensitive to radiation: (1) rapidly dividing, (2) slowly
dividing, (3) young, and/or (4) old?
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, 1 and 3
Rapidly dividing, young cells are most sensitive to radiation.
The ________ foramen is a tiny hole or opening in bone located on the internal surface of
the mandible near the midline.
A.mandibular
B.incisive
C.mental
D.lingual
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D.lingual
The lingual foramen is a tiny hole or opening in bone located on the
internal surface of the mandible near the midline. The mental foramen is a
hole or opening in bone located on the external surface of the mandible in
the region of the mandibular premolars. The incisive foramen (nasopalatine
foramen) is a hole or opening in bone located at the midline of the anterior
portion of the hard palate directly posterior to the maxillary central
incisors. The mandibular foramen is a round or ovoid hole in bone on the
lingual aspect of the ramus of the mandible.
(1) All ionizing radiations cause damage to living tissues. (2) Although very little
radiation is used in dentistry, damage to the cells can occur.
A.Both statements are true.
B.The first statement is false; the second statement is true.
C.The first statement is true; the second statement is false.
D.Both statements are false.
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, A.Both statements are true.
All ionizing radiations are harmful and produce biologic changes in living
tissue. The amount of radiation used in dental radiography is small, but
biologic damage does occur. The amount of radiation used in dental
radiography is small, but biologic damage does occur. All ionizing
radiations are harmful and produce biologic changes in living tissue.
Which size receptor would you use to take an occlusal image on your 3-year-old
patient?
A.0
B.2
C.1
D.4
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B.2
In children, a size 2 receptor is used in the occlusal examination.
The _____________ is a long, thin, pointed process below the external auditory meatus.
A.glenoid fossa
B.styloid process
C.lateral pterygoid plate
D.articular eminence
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styloid process
The styloid process is a long, pointed, and sharp projection of bone that
extends downward from the inferior surface of the temporal bone. The
glenoid fossa is a concave, depressed area of the temporal bone located
anterior to the mastoid process and the external auditory meatus. The
articular eminence is a rounded projection of the temporal bone located
anterior to the glenoid fossa. The lateral pterygoid plate is a thin, wing-
, shaped bony extension of the sphenoid bone located distal to the
maxillary tuberosity region.
Label G
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Hard palate
Label A
Label C
Label G
Label E
___________ refers to the total amount of radiation that is received or absorbed.
A.Cell sensitivity
B.Dose rate
C.Amount of tissue irradiated
D.Total dose
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D.Total dose refers to the quantity of radiation received or the total amount
of radiation energy absorbed. Dose rate is the rate at which exposure to
radiation occurs and absorption takes place. Amount of tissue irradiated
refers to the areas of the body exposed. Cell sensitivity refers to the
susceptibility of the particular type of cell to radiation.
(1) The zygomatic process appears Y-shaped on images. (2) The zygomatic process
appears radiolucent on images.
A.The first statement is true; the second statement is false.