The number of dentinal zones in dentinal caries is_____________?

Correct answer: B. Five

  • A. One
  • B. Five
  • C. Four
  • D. Two

Explanation

Classical dentinal caries is described in five zones, progressing from relatively intact or sclerotic dentin toward softened, bacteria-infected dentin. This zonal pattern reflects sequential mineral loss, bacterial invasion, and tissue destruction.

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