The average diameter of coronal dentinal tubules near the pulp is____________?
Correct answer: D. 2-3 microns
- A. 0.2-0.5 microns
- B. 7 microns
- C. 0.2-0.3 microns
- D. 2-3 microns
Explanation
Coronal dentinal tubules are widest near the pulp, with an average diameter of about 2 to 3 micrometres, and become narrower toward the dentinoenamel junction. The smaller values describe peripheral tubules.
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