Worksheetsintern mcqs OMR Dept. 10 july
Total questions: 50
Worksheet time: 38mins
Name
Class
Date
1.
The etiology of Mikulicz's Disease is?
a)
Genetic
b)
Auto immune
c)
viral
d)
Bacterial
2.
Sialoliths are most commonly found during radiographic examination of the?
a)
Parotid gland
b)
Maxillary sinus
c)
Submandibular duct
d)
sublingual gland duct
3.
A Condition of the mouth which increases the caries activity in the oral cavity?
a)
Xerostomia
b)
Malignancy
c)
Thin saliva
d)
Hairy Tongue
4.
Adenopathy is clinically manifested by?
a)
Hypersalivation
b)
Swelling
c)
Hyposalivation
d)
Swelling of the Tongue
5.
which of the following sites of minor salivary glands is more prone for the occurance of tumors?
a)
Palate
b)
Lower Lip
c)
Cheek
d)
Tongue
6.
Congenital occulusion or absence of one or more major salivary gland duct is known as?
a)
Atresia
b)
Abberancy
c)
Aplasia or Agensis
d)
none of above
7.
"Branch less fruit laiden tree" or "cherry blossom appearance"is radiographically seen in?
a)
Adenom cystic cell carcinoma
b)
mucoepidermoid carcinoma
c)
clear cell carcinoma
d)
sjogren's syndrome
8.
usually major salivary glands are affected by tumors and malignancies but which of the following tumor affect palatal salivary glands?
a)
adenom cystic carcinoma
b)
acinic cell carcinoma
c)
mucoepidermoid carcinoma
d)
clear cell carcinoma
9.
which of the following malignant salivary gland tumoris common in children?
a)
pleomorphic adenoma
b)
cylindroma or adenoid cystic carcinoma
c)
serous cell adenoma
d)
muco epidermoid carcinoma
10.
The best view to visualize zygomatic arches is?
a)
jug handle view
b)
occipito mental view
c)
OPG
d)
skull PA view
11.
Best radiograph for viewing fracture maxillary bone
a)
submentovertex
b)
PA View
c)
Water's view
d)
Towne's projection
12.
least radiation exposure occurs in?
a)
MRI
b)
CT scan
c)
Arthrography
d)
OPG
13.
The best radiographic view of TMJ is given by?
a)
Transorbital view
b)
Reverse Towne's view
c)
Transpharyngeal
d)
Panorex
14.
Submentovertex is useful in viewing?
a)
Body of mandible
b)
fractures of zygomatic arch
c)
fractures of base of skull
d)
All of the above
15.
Ghost like shadow seen in?
a)
MRI
b)
OPG
c)
CT
d)
Cephalogram
16.
Zygoma fractures can be best viewed by?
a)
Occipitomental view
b)
lateral view
c)
Towne's view
d)
Lateral skull
17.
Which anatomical structure are most often ghosted in OPG?
a)
Hyoid bone
b)
inferior border of mandible
c)
cervical spine
d)
All of the above
18.
Regarding Sialogram identity the false statement?
a)
specificity is more then salivary scan
b)
sialogram is done after salivary scan if both are indicated
c)
sialogram is anatomical and salivary scan is functional
d)
None of the above
19.
How many types of Tomographic Movement are there?
a)
5 types
b)
3types
c)
4types
d)
2types
20.
Best radiographic view for condylar and ramus fracture?
a)
Caldwell view
b)
Townes view
c)
Reverse towne's view
d)
Water's view
21.
which factor helped to revolutionize CBCT for dentistry?
a)
Development of rotating scanner
b)
subsecond gantry rotation speeds
c)
improvement in stationary exposure x-ray tubes
d)
reduction in cost of image reconstruction computer's
22.
Which is a principal feature of cone-beam computed tomography (CBCT)?
a)
Generation of internal images.
b)
Subsecond gantry rotation speeds.
c)
Acquisition of multiple planar projections.
d)
Slit-beam with rotational scanning capabilities.
23.
Computed tomography (CT) scanners consist of all, EXCEPT one. Which one is the EXCEPTION?
a)
X-ray source.
b)
X-ray detector.
c)
Rotating gantry.
d)
Image receptor cassette.
24.
Which BEST explains how cone-beam scanners differ from computed tomography (CT) Scanner
a)
Utilized for medical purposes rather than dental purposes.
b)
Linear detector rather than a two-dimensional area detector.
c)
Two-dimensional area detector rather than a linear detector.
d)
Less exact image reconstruction than CT scanners.
25.
Which reason BEST explains why one rotational gantry scan is required in order to obtain enough data for image reconstruction?
a)
Economic feasibility.
b)
Pixel size relative to area detector.
c)
Exposure incorporates entire region of interest.
d)
180-degree rotational x-ray source and reciprocating area detector.
26.
The complete series of CBCT basis images is called the
a)
scan.
b)
projection data.
c)
voxel dimension.
d)
fixed interval projection.
27.
Which is NOT a component of CBCT image acquisition?
a)
Image display.
b)
X-ray generation.
c)
Image reconstruction.
d)
X-ray detection system.
28.
Which is the footprint of the CBCT machine?
a)
Orthogonal planes.
b)
Physical surface area.
c)
Attenuated beam in its trajectory.
d)
Automatic exposure control feature.
29.
Which “as low as reasonably achievable” (ALARA) principle of dose optimization is appro-priate for CBCT?
a)
Base exposure factors on patient’s size.
b)
Practice sight developing for office-specific machine.
c)
Use exposure settings for average-sized male or female.
d)
Reduce kilovolts peak (kVp) in conjunction with exposure time.
30.
Which is the MAIN advantage of a pulsed beam?
a)
Operator independent.
b)
Shortens scanning time.
c)
Reduces patient radiation exposure.
d)
Lessens potential for patient movement.
31.
Patient exposure dose depends upon all factors EXCEPT one. Which one is the EXCEPTION?
a)
Size of image field.
b)
Footprint of machine.
c)
Presence of pulsed x-ray beam.
d)
Variation in exposure parameters.
32.
Which is the most common jaw disorder?
a)
Joint arthritides.
b)
Condylar hyperplasia.
c)
Degenerative joint disease.
d)
Temporomandibular joint dysfunction.
33.
Which is NOT a clinical feature of temporomandibular joint dysfunction?
a)
Headache.
b)
Subluxation.
c)
Joint stiffness.
d)
Chin deviation.
34.
TMJ imaging is recommended in each case, EXCEPT one. Which is the EXCEPTION?
a)
56-year-old male with a history of trauma.
b)
67-year-old female with suspected osseous abnormality.
c)
12-year-old male about to undergo orthodontic treatment with no symptoms.
d)
25-year-old female with an unexplained alteration in range of motion.
35.
The cortical borders of the temporomandibular joint are completely calcified by
a)
6 months of age.
b)
1 year of age.
c)
10 years of age.
d)
20 years of age.
36.
Which is the temporal component of the temporomandibular joint?
a)
Coronoid process.
b)
Interarticular disk.
c)
Mandibular fossa.
d)
Mandibular condyle.
37.
Which area of the interarticular disk (meniscus) is thin?
a)
Medial aspect.
b)
Anterior band.
c)
Posterior band.
d)
Central portion.
38.
Which is NOT identified in a panoramic projection?
a)
Large osteophytes.
b)
.Extensive erosions.
c)
Tumors or fractures.
d)
Mild osseous changes.
39.
Which plain film imaging modality requires an open or protruded mouth?
a)
Transcranial.
b)
Transorbital.
c)
Submentovertex.
d)
Transpharyngeal.
40.
Which imaging technique provides an ideal view of osseous TMJ structures?
a)
Transcranial.
b)
Submentovertex.
c)
Cone-beam computed tomography (CBCT).
d)
Magnetic resonance imaging (MRI).
41.
Which imaging technique best visualizes the soft tissues of the TMJ?
a)
CT.
b)
MRI.
c)
Panoramic.
d)
Arthrography.
42.
Which is a characteristic of condylar hyperplasia?
a)
Anterior open bite.
b)
Bilateral condition.
c)
Orthodontic care is recommended.
d)
Caused by obstructed blood supply.
43.
Which exemplifies condylar hypoplasia?
a)
Condyle is large; shape is normal.
b)
Condyle is small; shape is normal.
c)
Condyle is large; shape is abnormal.
d)
Condyle is small; shape is abnormal.
44.
Which radiographic projection unintentionally reveals juvenile arthrosis?
a)
Occlusal.
b)
Panoramic.
c)
Cephalometric.
d)
Full-mouth series.
45.
The TMJ is generally NOT affected in which condition?
a)
Septic arthritis.
b)
Juvenile arthritis.
c)
Rheumatoid arthritis.
d)
Degenerative joint disease.
46.
Which is the most common cause of bilateral TMJ ankylosis?
a)
Trauma.
b)
Fracture.
c)
Infection.
d)
Rheumatoid arthritis.
47.
Which is NOT a viable characteristic of cone-beam computed tomography (CBCT)?
a)
Decreased radiation dosage.
b)
Excellent images of osseous structures.
c)
Excellent images of surrounding soft tissues.
d)
Data can be reformatted to improve frontal images of the TMJ.
48.
Magnetic resonance imaging is an acceptable modality in the presence of which?
a)
Pregnancy.
b)
Pacemaker.
c)
Quadriplegia.
d)
Claustrophobia.
49.
Computed tomography (CT) does NOT produce an accurate image of which structure?
a)
Articular disk.
b)
Zygomatic arch.
c)
Articular eminence.
d)
Mandibular condyle.
50.
Which finding differentiates rheumatoid and juvenile arthritis?
a)
Pain.
b)
“Bird face.”
c)
Inflammation.
d)
Osteopenia.
100 %
