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NEETMDS- Orthodontics mcq
MDS PREP
Difference in width of permanent and primary incisors is
1) Incisal guidance
2) Incisal inclination
3) Overjet
4) Incisal liability
Orthodontics Answer: 4

As age advances, the human profile generally
1) Remains the same
2) Increases in convexity
3) Decreases in convexity
4) Decreases in concavity
Orthodontics Answer: 3

18/8 stainless steel
1) 18 % Nickel 8 % Chromium
2) 18 % Chromium 8 % Copper
3) 18 % Chromium 8 % Nickel
4) None of the above
Orthodontics Answer: 3

Baker"s anchorage is a type of
1) Intramaxillary anchorage
2) Intermaxillary anchorage
3) Extraoral anchorage
4) Muscular anchorage
Orthodontics Answer: 2

When a permanent tooth emerges clinically how much of root structure is most likely to have developed
1) 1/3
2) 2/3
3) 100 %
4) No reaction at all
Orthodontics Answer: 2

A helix is placed for
1) Activation
2) Increasing the flexibility and range
3) Esthetics
4) Retention
Orthodontics Answer: 2

Removal of 7/7 in preference is indicated in
1) Mild class II div I class
2) In adult patients
3) When 8/8 are congenitally absent
4) When 6/6 are inclined distally
Orthodontics Answer: 1

A primary second molar becomes ankylosed most commonly 
 1. During root formation
 2. During physiological root resorption
 3. Due to failure of alveolar bone of tooth to grow
 4. All of the above
Orthodontics Answer: 2

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