Smooth surface caries is characterized by spread of caries in enamel and dentin as cones. These alignment in enamel and dentin is____________?
Correct answer: B. Apex to base
- A. Base to base
- B. Apex to base
- C. Apex to apex
- D. None of the above
Explanation
In smooth-surface caries, the enamel cone has its apex toward the dentinoenamel junction, while the dentinal cone has its broad base at that junction. Their arrangement is therefore apex to base.
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