B – Erythroplakia (highest malignant transformation rate, ~90% shows dysplasia/carcinoma). Leukoplakia also premalignant, but erythroplakia is more dangerous.
A – Dentigerous cyst surrounds crown of unerupted tooth. OKC and ameloblastoma can be multilocular; periapical granuloma is at apex, not crown.
A unilocular radiolucency associated with an impacted mandibular third molar, displacing the inferior alveolar canal inferiorly, is most likely: A) Dentigerous cyst B) Odontogenic keratocyst C) Ameloblastoma D) Periapical granuloma mcqs in oral medicine and oral radiology pdf
| Feature | Why it matters | |--------|----------------| | | Allows systematic revision | | Explanations (not just answers) | Helps understand why an option is right/wrong | | High-yield repeats (NEET/NBDE pattern) | Prepares you for competitive exams | | Images for radiology (radiolucent/radiopaque lesions, X-ray findings) | Critical for visual diagnosis | | Clinical vignettes | Tests application of knowledge | | References to standard textbooks (Burket’s, White & Pharoah, Neville) | Validates accuracy | 4. Sample MCQs (With Explanations) – Oral Medicine Q1. A 45-year-old male has a non-scrapable white patch on the buccal mucosa with a “lacy” pattern on both sides. The most likely diagnosis is: A) Leukoplakia B) Oral lichen planus C) White sponge nevus D) Frictional keratosis
Which radiographic sign is characteristic of Paget’s disease of bone (jaw)? A) Ground-glass appearance B) Cotton-wool appearance C) Target lesion D) Soap-bubble appearance A 45-year-old male has a non-scrapable white patch
Which of the following is a premalignant condition? A) Pyogenic granuloma B) Erythroplakia C) Geographic tongue D) Apthous ulcer
B – Oral lichen planus (reticular form). Bilateral, lacy (Wickham’s striae) is classic. Leukoplakia is unilateral, scrapable? No. White sponge nevus is hereditary and generalized. which lab finding is most relevant?
In a patient with burning mouth syndrome, which lab finding is most relevant? A) Elevated ESR B) Low serum ferritin C) Positive ANA D) High cortisol
C – Pulp space (air/gutta percha, but air is most radiolucent). Enamel is most radiopaque.
B – BMS can be associated with nutritional deficiencies (iron, B12, folate). Ferritin low → iron deficiency. Other options less specific. 5. Sample MCQs – Oral Radiology Q1. The most radiolucent structure in a periapical radiograph is: A) Enamel B) Dentin C) Pulp space D) Cementum