Moderate
On microscopic examination enamel rods have___________?
Correct answer: A. Key hole appearance in cross section
- A. Key hole appearance in cross section
- B. Paddle appearance in cross section
- C. Lanullate appearance in cross-section
- D. None of the above
Explanation
In cross-section, enamel rods commonly show a keyhole or paddle-like outline, with the head toward the incisal or occlusal surface. The keyhole description is the standard single-best answer.
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