Diagnostic Procedures aids and their interpretation l Orthodontics MCQs for dental students
MCQ in orthodontics diagnosis
1. All of the following are essential diagnostic Aids except:
A.
Periapical radiographs
B. Wrist x-rays
C. master
study casts
D. Facial
photographs
2. A patient suffering from epilepsy needs an orthodontic treatment. The dentist should:
A may the orthodontic treatment
until epilepsy is in control
B. Proceed
With an orthodontic treatment
C. Advise
him that an epileptic patient cannot undergo an orthodontic treatment
D. None of
the above
3. A boy undergoing orthodontic treatment takes aspirin. This results orthodontic tooth movement to be:
A. Faster
than normal
B. Same as
normal
C. Slower than normal
D. Cannot be
predicted
4. Skeletal indicators of maturity are determined by:
A. Chest
X-ray
B.
Periapical X-ray
C. Hand
wrist X-ray
D. Occlusal
X-ray
E. Combination of B and C
5. Brachycephalic individuals usually have:
A. Narrow
dental arches
B. Broad dental arches
C. Normal
dental arches
D. Both A
& B
6. The molar relationship in a person with a concave profile is most likely to be:
A. Class I
molar relationship
B. Class II division
I molar relationship
C. Class Ill
division II molar relationship
D. Class Ill molar relationship
7. Ideally, when the teeth are in normal occlusion the mandibular skeletal base as compared to the maxillary skeletal base is:
A. 2 to 3 mm
anterior
B. 2 to 3 mm posterior
C 6 to 5 mm
anterior
D. 5 to 6 mm
posterior
8. When the mandibular plane and the Frankfort horizontal plane meet beyond the occipital region, it indicates:
A- Horizontal growing face
B. Vertical
growing face
C High angle
face
D. None of
the above
9. Deep mento-labial sulcus is seen in:
A. Class I
malocclusion
B. Class II, division
malocclusion
C Class I
malocclusion with bimaxillary protrusion
D. Class Ill
malocclusion
10. ‘blanch test' is used to identify:
A.
Incompetent lips
B. Deviated
nasal septum
C. A shift
in the mandible during closing
D. Abnormal frenal attachment
11. In Gnathostatic models the base of the maxillary cast is trimmed 80 that it is parallel to:
A.
Frankfort horizontal plane
B. S-N plane
C Basion —Nasion plane
D. Bolton's plane
12. The diagnostic setup was first proposed by:
A. Calvin case
B. Edward Angle
C.
H D Kesling
D. William Conrad
13. Backward path of mandibular closure is seen is
a) Class II
division 2
b) Class I
c) Pseudo
class III
d) Class III
14. Convex profile is seen in
a) Class I
b)
Class II
c) Class III
d) None of above
15. Which of the following statements about the hand Wrist radiographs is incorrect:
A. It helps
not only in assessing the growth of an individual, but also helps to predict
future skeletal maturation rate and status
B. It is
based upon the fact that the numerous small bones of hand, like carpals,
metacarpals, etc show a predictable and scheduled pattern of appearance,
ossification and union from birth to maturity.
C. It gives us a general idea
regarding the amount and direction of growth
D. It helps
in determination of skeletal maturity status prior to treatment of skeletal
malocclusion such as skeletal class II Or class III malocclusion.
16. In orthodontic study models the bases of the maxillary and the mandibular casts are:
A. Parallel to each other
B. At 90 to
each other
C At 300 to
each other
D. At 1100
to each other
17. Which of the following methods is least accurate in determining the site of new bone deposition in laboratory animals:
A. Implants
B. Radiographs
C Tetracycline
stains
D.
Histochernical stains
18. The lip is supported by
a) Relation of lip edge and
facial surfaces of teeth
b) Labial
sulcus between teeth and lip
c)
Relationship of tongue and teeth
d) None
19. Normal nasolabial angle
a) 80°
b) 90-110°
c) 70°
d) 140°
20. Hyperactive mentalis activity is seen in
a) Class I
b) Class II division 1
c) Class II
division 2
d) Class III
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