NBDE Trivia 2

Question 1

Which vitamin deficiency is most commonly associated with glossitis and angular cheilitis?

Accepted Answer

Vitamin B2 (Riboflavin)

Answer

Riboflavin (B2) deficiency classically causes glossitis, angular cheilitis, and magenta tongue.

Question 2

The Wharton's duct is the excretory duct of which salivary gland?

Accepted Answer

Submandibular gland

Answer

Wharton's duct drains the submandibular gland and opens at the sublingual caruncle.

Question 3

Which of the following organisms is the primary etiologic agent of acute necrotizing ulcerative gingivitis (ANUG)?

Accepted Answer

Treponema vincenti and Fusobacterium nucleatum

Answer

ANUG is caused by a fusospirochetal complex dominated by Treponema vincenti and Fusobacterium nucleatum.

Question 4

The gonion is a landmark located on which bone?

Accepted Answer

Mandible

Answer

Gonion is the most posterior-inferior point of the mandibular angle, used in cephalometric analysis.

Question 5

Which pulp test uses carbon dioxide snow or ethyl chloride to assess pulp vitality?

Accepted Answer

Cold test

Answer

Cold testing with CO2 snow or ethyl chloride stimulates A-delta fibers to evaluate pulp sensibility.

NBDE - National Board Dental Examination Practice Test