NBDE Part II Orthodontics Questions With Answer Key

Question 16: Maxillary arch is longer than mandibular arch by

A. 1 mm

B. 2 mm

C. 3 mm

D. 4 mm

Answer & Explanation

Answer: [B]


Question 17: What is the proper space maintenance treatment in a 9 yr old boy whose tooth no 30 has been extracted?

A. No space maintenance is required

B. Removable partial denture

C. Distal shoe

D. Band and loop

Answer & Explanation

Answer: [A]


Question 18: Which method can be employed for better visualization of soft tissues on a lateral cephalogram?

A. A hard tissue shield

B. A soft tissue shield

C. Change in kilo-voltage

D. Change in milliampere

Answer & Explanation

Answer: [B]


Question 19: In which type of malocclusion a forward shift of mandible is seen during closure to avoid incisal interference?

A. Sunday bite

B. True class III malocclusion

C. Pseudo-class III malocclusion

D. All of the above

Answer & Explanation

Answer: [C]


Question 20: Which of the following factor can result in class I malocclusion?

A. Uneven growth of arches

B. Mandibular incisal crowding

C. An abnormal frenum

D. Discrepancy between tooth size and supporting bone

Answer & Explanation

Answer: [D]

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