Pathology · single question
How do you clinically differentiate Amelogenesis Imperfecta (AI)?
Show answer and explanation
Correct answer: B. Generalized grooves on the free (smooth) surfaces of teeth
B) Generalized grooves on free/smooth surfaces — CORRECT.
Amelogenesis Imperfecta involves a hereditary defect in enamel formation (ameloblast dysfunction). The hypoplastic type shows generalized pitting, grooves, or horizontal lines on the smooth surfaces of ALL teeth (both primary and permanent), which distinguishes it from fluorosis or localized defects.
A) Blue staining: Not characteristic of AI. Blue staining can occur with tetracycline in some contexts but is not AI-specific.
C) Localized pitting only: Turner's hypoplasia is localized to one tooth area — AI is generalized.
D) Post-eruption discoloration: More characteristic of Dentinogenesis Imperfecta or tetracycline staining.
Amelogenesis Imperfecta involves a hereditary defect in enamel formation (ameloblast dysfunction). The hypoplastic type shows generalized pitting, grooves, or horizontal lines on the smooth surfaces of ALL teeth (both primary and permanent), which distinguishes it from fluorosis or localized defects.
A) Blue staining: Not characteristic of AI. Blue staining can occur with tetracycline in some contexts but is not AI-specific.
C) Localized pitting only: Turner's hypoplasia is localized to one tooth area — AI is generalized.
D) Post-eruption discoloration: More characteristic of Dentinogenesis Imperfecta or tetracycline staining.