Free NBDE Knowledge Questions and Answers

Question 1

What is the most common form of gingival disease?

Accepted Answer

Plaque-induced gingivitis

Answer

Plaque-induced gingivitis is the most prevalent form of gingival disease, characterized by inflammation of the gums primarily caused by the accumulation of bacterial plaque along the gumline. It is reversible with effective oral hygiene practices and professional dental cleaning, distinguishing it from more advanced periodontal conditions.

Question 2

Which of the following systematic diseases is not associated with aphthous-like ulcerations?

Accepted Answer

Irritable bowel syndrome

Answer

Irritable bowel syndrome (IBS) is a functional gastrointestinal disorder primarily affecting the large intestine, characterized by symptoms like abdominal pain and altered bowel habits. Unlike conditions such as Behcet syndrome, celiac disease, or certain nutritional deficiencies, IBS is not typically associated with the development of aphthous-like ulcerations in the oral cavity.

Question 3

What salivary gland disorder would you suspect with your patient who suffers from keratoconjunctivits sicca and xerostomia?

Accepted Answer

Sjogren syndrome

Answer

Sjogren syndrome is a chronic autoimmune disease characterized by the immune system attacking moisture-producing glands, predominantly the salivary and lacrimal glands. This leads to the hallmark symptoms of xerostomia (dry mouth) and keratoconjunctivitis sicca (dry eyes), which are indicative of the condition.

Question 4

What is a common ingredient in soft drinks, gum candy, toothpaste, breath fresheners, dental floss that often causes contact stomatitis?

Accepted Answer

Flavoring

Answer

Flavoring agents, particularly cinnamon and spearmint, are common ingredients in oral products like toothpaste, gum, and candies that frequently cause contact stomatitis. This allergic reaction manifests as redness, burning, and ulcerations in the oral mucosa due to direct contact with the allergen.

Question 5

Which virus is associated with Forchheimer's sign?

Accepted Answer

Rubella

Answer

Forchheimer's sign, characterized by small, red macules or petechiae on the soft palate, is a classic early enanthem associated with Rubella (German measles) infection. This distinct oral manifestation helps in the clinical diagnosis of Rubella, differentiating it from other viral exanthems.

NBDE - National Board Dental Examination Practice Test

NBDE - National Board Dental Examination Practice Test

Free NBDE Knowledge Questions and Answers