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

MCQs on Dental Cements- Dental Materials MCQs

# Fluoride rich materials include:
A. Silicate cement
B. Glass ionomer cement
C. Poly carboxylate cement
D. All of the above

# Glass ionomer cements are composed of:
A. Alumina silicate powder and phosphoric acid
B. Aluminosilicate powder and polyacrylate
C. Zinc oxide powder and phosphoric acid
D. Zinc oxide powder and polyacrylate Liquid

# Which one of the following dental cement accelerates the formation of reparative dentin?
A. Eugenol
B. Calcium hydroxide
C. Zinc oxide
D. Silica

# Minimum thickness for type I zinc phosphate cement should be:
A. 15 microns
B. 25 microns
C. 50 microns
D. 100 microns

The bone of tooth socket is called:

 # The bone of tooth socket is called:

A. Alveolar process

B. Alveolus

C. Gomphosis

D. Cancellous bone

The correct answer is A. Alveolar process.

The bone of the tooth socket is called the Alveolar process.

Here’s a brief explanation of the terms:

Alveolar process: The bony ridge in the jaw that contains the sockets (alveoli) for the teeth.

Alveolus: Refers specifically to the individual tooth socket itself.

Gomphosis: The fibrous joint between a tooth and its socket.

Cancellous bone: A type of bone tissue that is spongy and found within the alveolar process, but it is not specifically the term for the socket.

So the correct answer is A. Alveolar process.

Number of surfaces of an anterior tooth is:

 # Number of surfaces of an anterior tooth is:

A. 5

B. 3

C. 4

D. 6

The correct answer is C. 4.

The number of surfaces of an anterior tooth is typically 4. Anterior teeth, which include incisors and canines, generally have the following surfaces:

1. Facial (or Labial): The surface facing the lips.
2. Lingual: The surface facing the tongue.
3. Mesial: The surface closest to the midline of the dental arch.
4. Distal: The surface farthest from the midline.

Therefore, the correct answer is C. 4.