NBDE Part 2 Practice Exam Series 39 – Orthodontics NBDE Part 2 Study Guide

NBDE Part 2 Practice Exam Series 39 – Take a free NBDE Part 2 Practice Exam Series 39 for preparation of NBDE exam. The NBDE Part 2 Practice Exam Series 39 is totally free of cost and no registration is required to take part in it. DentistryTalk is also providing the Orthodontics NBDE Part 2 Study guide and study material.

NBDE Part 2 Practice Exam Series 39

Question 1: What do you understand by 18/8 stainless steel?

A. 18% chromium, 8%nickel

B. 18% chromium, 8% copper

C. 18% copper, 8% chromium

D. 18% nickel, 8% chromium

Answer

Answer: [A]

Question 2: For what purpose elastic thread is used in orthodontic treatment?

A. Closure of space

B. Moving the root in mesiodistal direction

C. Moving the root in palatal direction

D. De-rotation of tooth

Answer

Answer: [D]

Question 3: How much expansion is caused by 90 degree movement of expansion screw?

A. 0.10mm

B. 0.15mm

C. 0.20mm

D. 0.40mm

Answer

Answer: [C]

Question 4: At what angle do two blocks are present in twin block functional appliance?

A. 45 degree

B. 70 degree

C. 85 degree

D. 110 degree

Answer

Answer: [B]

Question 5: In which form iron carbide is present in orthodontic wires?

A. Ferrite

B. Austenite

C. Martensite

D. A mixture of all above

Answer

Answer: [B]

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