NDHCE General and Oral Pathology 2

Question 1

Which pathological process describes irreversible pulpal necrosis resulting from ischemia after traumatic injury to the tooth?

Accepted Answer

Pulp necrosis

Answer

Pulp necrosis is the death of pulpal tissue due to ischemia (loss of blood supply), often following trauma that severs the apical vessels, making it irreversible.

Question 2

A patient with Sjögren's syndrome is at highest risk for which oral complication?

Accepted Answer

Rapid rampant dental caries

Answer

Sjögren's syndrome causes severe xerostomia due to autoimmune destruction of salivary glands, dramatically increasing the risk of rapid rampant dental caries from loss of saliva's protective effects.

Question 3

Which type of cyst is derived from the reduced enamel epithelium and surrounds the crown of an unerupted tooth?

Accepted Answer

Dentigerous cyst

Answer

A dentigerous (follicular) cyst develops from the reduced enamel epithelium that surrounds the crown of an unerupted tooth, attaching at the cementoenamel junction.

Question 4

Erythroplakia is considered more clinically significant than leukoplakia because it has a higher rate of:

Accepted Answer

Malignant transformation

Answer

Erythroplakia (red velvety patches) has a significantly higher rate of malignant transformation than leukoplakia, with the majority of lesions showing dysplasia or carcinoma on biopsy.

Question 5

Which condition is characterized by bilateral, painful oral ulcers affecting the non-keratinized mucosa, often recurring monthly, and is NOT associated with trauma?

Accepted Answer

Recurrent aphthous stomatitis (RAS)

Answer

Recurrent aphthous stomatitis presents as recurrent, painful ulcers on non-keratinized mucosa (e.g., buccal and labial mucosa), cycling approximately monthly, without a confirmed infectious etiology.

NDHCE - National Dental Hygiene Certification Examination Practice Test

NDHCE - National Dental Hygiene Certification Examination Practice Test

NDHCE General and Oral Pathology 2