WorksheetsOral Medicine & Radiology - 31.08.2020
Total questions: 50
Worksheet time: 37mins
Name
Class
Date
1.
Film size used for imaging TMJ<br />
a)
8x10 inch
b)
10x12 inch<br />
c)
5x7 inch<br /><br />
d)
4x3 inch<br />
2.
After radiation therapy ,Child develop rampant caries, this is called:<br />
a)
Rampant caries
b)
Radiation caries<br />
c)
ECC<br />
d)
Secondary caries
3.
If exposure is doubled (tube current, voltage remains constant), then:<br />
a)
Maximum energy double<br /><br />
b)
<br />Mean energy is double<br /><br />
c)
<br />Proton energy is double<br /><br />
d)
<br />Number of photons is doubled<br />
4.
Normal angulation for recording a periapical radiograph of a maxillary lateral incisor:<br />
a)
70 degrees<br /><br />
b)
<br />30 degrees<br /><br />
c)
<br /> 40 degrees<br />
d)
<br />-30 degrees<br /><br />
5.
Best view for TMJ derangements is:<br />
a)
MRI<br /><br />
b)
CT<br />
c)
Cone beam CT<br />
d)
Lateral skull
6.
Best view for Condylar neck fracture.
a)
PA skull<br /><br />
b)
Reverse town<br /><br />
c)
Occipito-mental<br />
d)
Submentovertex<br />
7.
Radiographic view for displaced root fragment in maxillary sinus, best view is:<br />
a)
MRI<br /><br />
b)
Lat oblique<br />
c)
<br />IOPA<br />
d)
<br />Occipito-menton
8.
X-ray fixer contains all of the following except:<br />
a)
An antioxidant
b)
An accelerator
c)
An acidifier
d)
A clearing agent
9.
Diamond effect will appear on the processed film when:
a)
An improper horizontal angulation is used
b)
The film is placed backwards in the mouth
c)
The film is bent
d)
An improper vertical angulation is used
10.
Earliest R/G changes seen in Osteomyelitis:
a)
Sequestrum representing radiopacity<br />
b)
<br />Evidence of an involucrum<br /><br />
c)
<br />Blurring of the trabecular pattern
d)
<br />Proliferating periostitis<br />
11.
To assess the function of parotid gland, what is used:<br /><br />
a)
Sialography<br /><br />
b)
<br />Scintigraphy<br /><br />
c)
<br />CT<br /><br />
d)
<br />MRI<br />
12.
According to heel effect when cathode rays strike anode target, x-ray released with high intensity are<br />found towards;
a)
In between anode and cathode
b)
Cathode
c)
Anode
d)
None of these
13.
Image sharpness on a radiograph is increased by
a)
Increasing object thickness
b)
<br />Using large focal spot size
c)
<br />Using small focal spot size
d)
<br /> Increasing film speed
14.
The size of adult IOAP film is
a)
21x31
b)
<br />41x51
c)
<br />51x61
d)
<br />31x41
15.
Which of the following statements is incorrect regarding the principles of radiology?
a)
Use as small and effective focal spot as possible.
b)
Increase distance between the focal spot and object
c)
Maximize the distance between object and film<br />
d)
Position the film parallel to the long axis of the object.
16.
Which of the following is the most radiosensitive?<br />
a)
Bone marrow
b)
Mature RBC
c)
Growing cartilage<br />
d)
Optic lens<br />
17.
Hanging drop appearance in the maxillary sinus radiograph indicates?
a)
An artifact in radiograph<br /><br />
b)
Cyst in maxillary sinus<br /><br />
c)
Blow out fracture of orbit <br /><br />
d)
Carcinoma maxillary sinus<br />
18.
High quality radiographs involve positioning films nearly parallel with the long axis of teeth. This<br />generally places the films some distance from the teeth and causes distortion. To compensate, one should:
a)
Increase kVp to above 60<br />
b)
Process films at 85 degrees
c)
decrease target-film distance
d)
<br /> Increase target-film distance
19.
Which of the following is least radiosensitive?
a)
Lymphoid organs
b)
Skin
c)
Optic Lens
d)
Erythrocytes
20.
pH at which fixer solution acts is:
a)
4.5-5
b)
3-4<br />
c)
4-4.5
d)
6-7
21.
Radio-isotopes used in the PET scan are: <br />
a)
C 11, F 18<br /><br />
b)
Gallium 67<br /><br />
c)
Technetium – 99m<br /><br />
d)
Xenon / kyrpton gas (K 81)<br />
22.
23-year-old patient complains of “exfoliated” several permanent teeth spontaneously. The remaining teeth on radiograph show lack of root formation The condition is
a)
Taurodontism<br />
b)
Dentin dysplasia<br />
c)
Odontodysplasia<br />
d)
Dentinogenesis imperfecta
23.
Net mineral loss required in order to detect caries radiographically is: <br />
a)
upto 10-20%<br /><br />
b)
<br /> More than 40%<br /><br />
c)
40-50%<br />
d)
Exceed 20-30%<br /><br />
24.
Ground glass appearance is seen in all except
a)
<br /> Gare’s Osteomyelitis<br />
b)
<br />Paget’s disease
c)
<br />Hyperparathyroidism
d)
Fibrous dysplasia<br /> <br />
25.
Punched out appearance is seen in
a)
Fibrous dysplasia<br /> <br />
b)
<br />Paget’s disease
c)
Hyperparathyroidism<br />
d)
Multiple myeloma
26.
Size of bite wing film: <br /><br />
a)
<br />32x41 mm<br /><br /><br />
b)
22x35 mm<br /><br /><br />
c)
<br />57x76 mm<br /><br /><br /> <br />
d)
<br />75x90 mma<br />
27.
Multiple well-defined multilocular radiolucencies of the maxilla and mandible in a 5 year old is most likely;
a)
Ameloblastic fibromas. <br /> <br /><br />
b)
Ameloblastomas.<br />.<br /><br />
c)
Cherubism. <br /> <br />
d)
Hyperthyroidism.<br />
28.
Multiple osteomas and supernumerary teeth may be associated with:
a)
Gorlin's syndrome.<br /><br />
b)
. Rubenstein - Taybi syndrome.<br />
c)
<br /> Cleidocranial dysplasia.<br />
d)
Gardner's syndrome.<br /><br />
29.
Which disorder presents with all permanent teeth exhibiting bulbous crowns, cervical constriction and obliterated pulp canals and chambers?<br />
a)
Amelogenesis imperfecta. <br /><br /><br />
b)
Dentinogenesis imperfecta.<br /><br /><br />
c)
Dentin dysplasia type I. <br /> <br /><br />
d)
. Dentin dysplasia type II.<br />
30.
The maximum interactions with matter in a dental X-ray beam occurs in the form of:
a)
Coherent scattering<br />
b)
Characteristic radiation<br />
c)
Compton scattering
d)
Photoelectric absorption
31.
Torn fish net appearance is seen in:
a)
ossyfying fibroma<br />
b)
<br /> odontoma<br />
c)
<br />Hyperparathyroidism<br />
d)
<br />Odontogenic myxoma<br />
32.
True about ghost images?
a)
<br />Smaller than real image
b)
<br />Formed on same side
c)
<br />Formed if object is b/w receptor and COR<br />
d)
<br />Formed if object is b/w Tube and COR<br />
33.
The microscopic appearance of the central giant cell granuloma of the jaws is similar to that of lesions which occur in:<br />
a)
Hyperparathyroidism. <br /><br /><br />
b)
Paget's disease.<br /><br />
c)
<br /> Cleidocranial dysplasia. <br /><br />
d)
Hyperpituitarism.<br />
34.
The genial tubercles are best visualized on which type of radiograph?
a)
Periapical. <br /><br />
b)
Occlusal. <br /><br />
c)
. <br /> Panoramic.<br />
d)
Bitewing. <br /><br />
35.
Onionskin appearance is seen in
a)
<br />Regional odonto dysplasia <br />
b)
<br />Thalassemia
c)
<br />Ewings sarcoma
d)
Ameloblastoma
36.
Radiograph shows typical radiopacity in area of falx cerebri; It is indicative of:
a)
Goltz gorlin syndrome <br />
b)
Nevoid basal cell carcinoma syndrome<br />
c)
Paget;s Disease<br />
d)
Hemangioma
37.
Multiple Dentigerous cyst are common in:
a)
Goltz gorlin syndrome <br />
b)
Maroteaux-Lamy Syndrome
c)
Bechet;s Syndrome
d)
Nevoid basal cell carcinoma syndrome
38.
Gastrointestinal symptoms are seen at which dose of radiation?<br />
a)
2-4 Gy<br /><br />
b)
<br />4-7 Gy<br /><br />
c)
<br />7-15 Gy<br />
d)
<br />15-20 Gy<br />
39.
A 30 year old male presented with history of road traffic accident and blow in his left cheek area. Left sinus and zygoma region was tender on palpation and patient reported epistaxis at the time of injury.<br />
a)
<br />Le Fort II fracture<br /><br />
b)
Le Fort I fracture<br />
c)
<br />Le Fort III Fracture <br />
d)
ZMC Fracture
40.
Ankylosis of TMJ can be best viewed in:
a)
PA View<br />
b)
Submentovertex<br /><br />
c)
Transcranial<br />
d)
Reverse town<br />
41.
Least radiation exposure occurs in:
a)
MRI<br /><br />
b)
CT scan
c)
OPG
d)
Arthrography
42.
What helps in diagnosis of cyst and tumor? <br />
a)
<br />Location<br />
b)
<br />Size<br />
c)
<br />Peripheral bone formation <br />
d)
Shape<br /><br />
43.
African man shows well defined, radiolucent area surrounding periapical region of mandibular anteriors, tooth is vital: diagnosis is: <br />
a)
<br />Periapical cemental dysplasia<br />
b)
<br />Periapical granuloma<br /><br />
c)
Condensing osteitis<br /><br />
d)
<br />Periapical cyst<br /><br />
44.
Apical root fracture is best visible in?<br />
a)
OPG<br /><br /><br />
b)
<br />Bitewing<br /><br />
c)
<br />IOPA<br />
d)
<br />Occlusal<br /><br />
45.
Radiographs are not useful in diagnosis of?
a)
Impacted teeth
b)
Cementoma<br />
c)
Subluxation<br /><br />
d)
Acute periapical abscess
46.
The angle for position distance rule is?
a)
90-135 Degree<br /><br />
b)
45-90 degree<br /><br />
c)
150-185 degree <br /><br />
d)
135-180 degree<br />
47.
Intensifying screens are used to:
a)
Increase contrast<br />
b)
Decrease radiation to patient<br />
c)
Decrease Contrast<br />
d)
Collimation
48.
During radiographic imaging, less predominant mechanism of X-rays production is: <br />
a)
Bremsstrahlung radiation<br /><br />
b)
Compton scattering<br /><br />
c)
Characteristic radiation<br /><br />
d)
Photoelectric effect<br />
49.
Bone death due to radiation is seen after radiation level of:<br />
a)
20 Gy<br /><br />
b)
30 Gy<br /><br />
c)
40 Gy<br /><br />
d)
50 Gy<br />
50.
Grids are used to:<br /><br /><br />
a)
Decrease radiation to patient<br /><br />
b)
Decrease exposure<br />
c)
<br />Reducing Fog<br /><br />
d)
<br />Reduce Kvp<br />
100 %
