Question 310 · LDEK · Etiology and pathogenesis of caries

What is the microscopic shape of an early carious lesion on a smooth tooth surface?

  1. A. it is usually seen to be cone-shaped, with the apex of the cone pointing towards the enamel-dentine junction.
  2. B. it is usually seen to be cone-shaped, with the base of the cone pointing towards the enamel-dentine junction.
  3. C. “scenic mountain landscape”.
  4. D. ring shaped.
  5. E. diffusive canals.
Hint

Compare the direction of enamel prisms on smooth surfaces with that in fissures — the lesion follows the prisms.

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