NBDHE NBDHE Oral Pathology and Disease Recognition 2 — Questions and Answers
Question 1: An amalgam tattoo appears clinically as which type of lesion?
- Red raised nodule
- Blue-gray flat macule (Correct answer)
- White plaque
- Yellow papule
Correct answer: Blue-gray flat macule
Amalgam tattoo is the most common pigmented lesion of the oral mucosa, appearing as a flat blue-gray macule from embedded amalgam particles.
Question 2: Fordyce spots found on the buccal mucosa and lips are:
- Minor salivary glands seen through mucosa
- Ectopic sebaceous glands (Correct answer)
- Lymphoid aggregates
- Viral papules
Correct answer: Ectopic sebaceous glands
Fordyce spots are ectopic sebaceous glands that appear as small yellow-white papules and are a normal anatomic variant requiring no treatment.
Question 3: A torus palatinus is best defined as:
- A malignant growth on the palate
- A benign bony exostosis on the midline of the hard palate (Correct answer)
- A salivary gland tumor
- An inflammatory cyst
Correct answer: A benign bony exostosis on the midline of the hard palate
Torus palatinus is a benign bony exostosis located at the midline of the hard palate and is a common normal anatomic variant requiring no treatment unless it interferes with a prosthesis.
Question 4: Aphthous stomatitis (canker sores) characteristically occur on:
- Keratinized attached gingiva
- Non-keratinized movable mucosa (Correct answer)
- Hard palate
- Dorsal tongue
Correct answer: Non-keratinized movable mucosa
Aphthous ulcers occur on non-keratinized, movable oral mucosa such as the buccal mucosa, labial mucosa, and floor of the mouth.
Question 5: Nicotinic stomatitis presents with white papules containing red centers primarily on the:
- Buccal mucosa
- Lateral tongue
- Hard palate (Correct answer)
- Floor of the mouth
Correct answer: Hard palate
Nicotinic stomatitis develops on the hard palate of pipe smokers, with red centers representing inflamed minor salivary gland duct openings.
Question 6: Angular cheilitis at the corners of the mouth is most commonly associated with infection by:
- Candida albicans (Correct answer)
- Herpes simplex virus
- HPV
- Streptococcus pyogenes
Correct answer: Candida albicans
Angular cheilitis is most commonly caused by Candida albicans, often exacerbated by nutritional deficiencies, vitamin B12 deficiency, or ill-fitting dentures.
NBDHE NBDHE Oral Pathology and Disease Recognition 2
An amalgam tattoo appears clinically as which type of lesion?