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(Dent421_mid_200620071_fig01) In the above radiograph, choose which of the
following statements are true regarding caries: (U=upper, L=Lower, D=distal, M=mesial)
Caries is present in U5D, L7M, L6D, L4D
Caries is present in U5D, U6M, L4D Caries is present in U4M, U5D, L7M, L6D, L4D
Caries is present in U4M, U5D, U6M, L6D, L4D
(Dent421_mid_200620071_fig02)In the above radiograph, teeth present are as
follows (according to the FDI nomenclature):
15, 14, 13, 43, 44, 4825, 24, 23, 33, 34, 38
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15, 14, 12, 43, 44, 47
25, 24, 22, 33, 34, 37
None of the above
(Dent421_mid_200620071_fig02) In the radiograph above:
There is evidence of root caries in the upper premolars and advance periodontaldisease
There is evidence of root caries but with normal periodontal condition
There is evidence of periodontal disease and no root caries just cervical burn outThere is mild periodontal disease and occlusal caries in the upper first premolar
No evidence of caries or periodontal disease on this radiograph
(Dent421_mid_200620071_fig03)The radiograph above shows:R
oot
caries
mesialto first
premolar, and proximal caries mesial to first molar, no periodontal disease
Mesial and distal caries at first molar and no sign of periodontal disease
Root caries mesial to first premolar, and proximal caries mesial to first molar, earlyperiodontal disease between first and second molars
Mesial caries at first molar and early signs of periodontal disease between first and
second molarsRoot caries mesial to first premolar, and proximal caries mesial to first molar,
generalized horizontal bone loss
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(Dent421_mid_200620071_fig04) The arrow in the above radiograph is pointing at:
Recurrent caries
Deficient restoration
Overhanging restorationMach band
Occlusal caries
(Dent421_mid_200620071_fig05) In the two radiographs above, the carious lesion
indicated by the arrow is located on the: lingual surface of lower first molar
buccal surface of lower first molar
occlusal surface of lower first molar
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(Dent421_mid_200620071_fig06) The radiopaque structure identified by the
arrow (# 6) is the:
inferior border of the orbitincisive foramenmiddle concha
floor of the nasal cavity
anterior nasal spine
(Dent421_mid_200620071_fig07) The radiopaque area outlined by the dotted line is:
Ghost image of the contralateral mandible
Ghost image of the C-spine The tongue shadow
The cheek shadow
None of the above
(Dent421_mid_200620071_fig06) The round radiolucency identified by the arrows (#
7) is the:posterior cranial fossa
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pterygomaxillary fissure
sinus recess
external auditory meatusintervertebral foramen
(Dent421_mid_200620071_fig06) The radiopaque structures identified by the arrows(# 8) is the:
ear lobe
cervical vertebraeclavicle
coronoid process
hyoid bone
If you see a small, round, cystlike radiolucency in the mandibular anterior midline
region of a panoramic film, what should you do?
Repeat the panoramic radiograph to see if the area can be duplicated
Aspirate the area to check for cystic or vascular lesionsCheck all teeth in the area for vitality
Take a standard periapical view to see if the area can be duplicated
A panoramic radiograph having shortened lower incisors with the occlusal plane in a
V shape indicates that the: patients chin was tilted excessively upward.
patients back was tilted excessively downward.
patient was positioned too far forward.
patient was positioned too far back. patient is wearing the thyroid collar
Which of the following statements relating to the panoramic tubehead is incorrect? The tubehead has a small round collimator to limit the size of the beam
The tubehead is angled upwards approximately 10 degrees
The tubehead travels in an arc behind the patients head, starting in themolar region on one side and ending in the molar region on the other side
The tubehead rotates 180 degrees behind the patient
The tubehead rotates around the patient on a path of sliding rotation center
After development, a panoramic radiograph shows strange artifacts that resemble
springs or boxes. Also the image appears to be reversed right to left. What happened?
wrong film type was used cassette was inserted into the machine backwards
panoramic was run in reverse direction
film was not properly aligned in cassette
Which of the following projections would normally be chosen when you want to see a
fracture of the zygomatic arch?
Waters
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PA Skull
Reverse Townes
Transcranial Submentovertex
In which of the following extraoral projections would the midsagittal plane not beperpendicular to the film (cassette)?
Lateral Ceph
Waters PA Skull
Reverse Townes
Submentovertex
For which of the following extraoral projections is the use of an intraoral x-ray
machine preferred?
Lateral Ceph
PA Skull Waters
Submentovertex None of the above
(Dent421_mid_200620071_fig08) In the picture above, the patient is set for which
extraoral projection? PA skull
AP skull
Waters view
Reversed Towns view
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Lateral skull
(Dent421_mid_200620071_fig9) The radiographic projection shown above is: Submentovertex Zygomatic arch view
Reverse Townes view
Watersview None of the above
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(Dent421_mid_200620071_fig10)The radiographic projection shown above was mainlytaken to evaluate:
The condylar necks Zygomatic arch
Maxillary sinuses Location of the condyles
Facial growth assessment
When changing from 60 kVp to 90 kVp which of the following statements is true:
Increase the effective contrast
Decrease the effective contrastLeave contrast unchanged
Increase the short scale contrast
Decrease the long scale contrast
Which of the following statements relating to film density is correct?
The size of the patients head has no bearing on film density; the patients
body size determines how light or dark the film will be. The film density produced by x-rays passing through a gold crown will be
less (lighter) than the film density produced by x-rays passing through soft
tissue
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If Patient A is a small child and Patient B is an adult, you would need to
decrease the exposure time for patient B to get the proper film density (to
match that on a film taken on Patient A); no change in mA or kVp A film with high film density will be very light, appearing underexposed
Film fogging will decrease the overall film density
(Dent421_mid_200620071_fig13) Regarding the image above, which of the followingstatements is correct?
The best contrast is at 100 kVp because of the many no. of shades that can be seen
There is long-scale contrast at 40 kVpContrast at 50 kVp is better than that at 90 kVp
Setting the machine at 80 kVp rather than 70 is best suited for looking at caries
All of the above
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(Dent421_mid_200620071_fig11) In the image above which of the following is
incorrect?
Film B is faster than film AFilm B has more contrast than film A
Film A has wider latitude than film B
Making errors in exposure is more expected using film ANone of the above
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(Dent421_mid_200620071_fig12) The lesion at the lower first molar can be described
with the following:
Periapical, radiolucent, poorly defined border, resorption, irregular
Periapical, radiopaque, poorly defined border, resorption, irregularPeriapical, radiolucent, well defined border, irregular
Periapical, radiolucent, poorly defined border, resorption, circumscribed
Pericoronal, radiolucent, poorly defined border, resorption, circumscribed
Destruction of bone surrounded by sclerosis is indicative of a malignant neoplasm
True
False
Radiologically, displacement of teeth by a lesion is a sign of a malignant process.
True
False
It is possible that the radiologic interpretation provide all the information needed for acertain case and a diagnosis can be made thenTrue
False
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(Dent421_mid_200620071_fig15) The radiographic appearance of the second molar
pointed at above is an indication of:Rarefying osteitis
Normal developing root
Root resorptionAdvanced periodontitis
None of the above
(Dent421_mid_200620071_fig14) The area pointed at in the radiograph above is showing:
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Normal alveolar crest
Vertical bone loss toward the second molar
Early periodontitisThe alveolus
The lamina dura
(Dent421_mid_200620071_fig16) The structure pointed at with the red arrow in the
radiograph is:
The inferior border of the maxillary sinusThe infraorbital rim
The zygomatic process of maxilla
The zygomatic archThe zygomatic bone
Short scale, high contrast is recommended for making radiographs to look at the
periodontal tissuesTrue
False
The radiographic signs of periodontal disease include one or more of the following
except:
CalculusHorizontal bone loss
Vertical bone loss
Furcation involvement
Loss of cortical density
Careless handling of the film in the darkroom leads to which of the following marks:
1. bending.
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2. static discharge.
3. finger nails.
4. roller marks.
1,4
2,3,41,2,3,4
1,2,3
When unit dosing is used and a blank film occurs after processing there is also usually
a __________ film present.
missing
underexposeddouble exposed
reversed
overlapping
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