Oral Pathology and Disease Recognition Flashcards

Which autoimmune disease causes bilateral, reticular white striations on the buccal mucosa known as Wickham's striae?

Answer: Lichen planus

Oral lichen planus classically presents as bilateral, interlacing white lines (Wickham's striae) on the buccal mucosa.

Nikolsky's sign, elicited by rubbing normal-appearing mucosa to produce a blister, is positive in which condition?

Answer: Pemphigus vulgaris

Pemphigus vulgaris involves autoantibodies against desmogleins, causing intraepithelial separation and a positive Nikolsky's sign.

A radiolucent lesion associated with the crown of an unerupted tooth is most likely a:

Answer: Dentigerous cyst

Dentigerous (follicular) cysts form by expansion of the follicular space around the crown of an unerupted tooth.

Which oral lesion is described as a dome-shaped, fluctuant blue swelling of the floor of the mouth resulting from a ruptured salivary gland duct?

Answer: Ranula

A ranula is a mucous retention phenomenon of the sublingual gland that presents as a translucent blue swelling on the floor of the mouth.

Amelogenesis imperfecta primarily affects which tooth structure?

Answer: Enamel

Amelogenesis imperfecta is a hereditary defect of enamel formation affecting enamel quantity or quality without systemic disease.

Oral candidiasis presenting as removable white plaques on an erythematous base is classified as which type?

Answer: Pseudomembranous candidiasis

Pseudomembranous candidiasis (thrush) presents as white, curd-like plaques that can be wiped away to reveal an erythematous base.