MCQs in Orthodontics - Myofunctional and Orthopedic appliances

# All of the following can be classified as myofunctional appliances EXCEPT:
A. Anterior bite plane
B. Andersen appliance
C. Begg appliance
D. Oral screen

# All the following are passive tooth-borne functional appliances except:
A. Andersen activator
B. Woodside and Hawley activator
C. Expansion activator
D. Herbst appliance

MCQs in Orthodontics - Removable and Fixed appliances

# Adams cribs can fracture in use if the:
A. Wire is too soft
B. Tags are high on the bite
C. Base plate is too thick
D. Arrowheads are too small

# How/where should wire be bent to activate a correctly made palatal canine retractor?
A. Between the coil and tooth, but close to the coil
B. Between the coil and tooth, but close to the tooth
C. Between the coil and its insertion into the base of the palate
D. By opening out the coil

Removable Orthodontic Appliance MCQs

1. Adams cribs can fracture in use if the:

A. Wire is too soft
B. Tags are high on the bite
C. Base plate is too thick
D. Arrowheads are too small

2. How/where should wire be bent to activate a correctly made palatal canine retractor?

A. Between the coil and tooth, but close to the coil
B. Between the coil and tooth, but close to the tooth
C. Between the coil and its insertion into the base of the palate
D. By opening out the coil

3. An anterior bite plane is used in correction of:

A. Anterior cross bite
B. Deep bite
C. Open bite
D. All of the above

4. Posterior bite plane is used in correcting:

A. Deep bite
B. Anterior open bite
C. Anterior cross bite
D. Posterior cross bite

5. Example of a semifixed orthodontic appliance is:

A. Kesslings wrap around retainer
B. Hawley's retainer
C. Lip bumper
D. Pin and tube appliance

6. The diameter of labial bow of the maxillary plate is:

A. 0.5 - 0.6 mm
B. 0.6 - 0.8 mm
C. 0.7 - 0.8 mm
D. 0.8 - 1.0 mm

7. A buccal canine retractor is better than a palatal canine retractor when:

A. The maxillary canine is distally placed
B. The maxillary canine is partially impacted
C. The maxillary canine is distally placed and rotated
D. The maxillary canine is buccally placed

MCQs in Orthodontics - Biomechanics of Tooth Movement

# 'Torque' in orthodontics refers to:
A. The change in mesiodistal inclination of teeth
B. The change in labiolingual inclination of teeth
C. The rotation of teeth
D. None of the above

# Resorption in case of ideal orthodontic tooth movement should be:
A. Undermining
B. Frontal
C. Indirect
D. Necrotic

# In orthodontic tooth movement which is involved:
A. Osteoblast
B. Osteoclast
C. Both A and B
D. None