Pathology · single question
Sclerotic dentin — what type of dentin formation is it?
Show answer and explanation
Correct answer: B. Intratubular (peritubular) dentin
- A. Reactionary dentin is newly formed dentin produced by existing odontoblasts in response to a mild stimulus, a distinct process from sclerosis of existing tubules.
- B. Correct. Sclerotic dentin results from increased mineralization within the dentinal tubules (intratubular/peritubular dentin deposition), narrowing/occluding the tubules in response to slow, chronic irritation (e.g., aging, slowly progressing caries, or attrition).
- C. Reparative (tertiary) dentin is formed by newly differentiated odontoblast-like cells after pulp injury, a different process from tubular sclerosis.
- D. Primary dentin is the dentin formed during initial tooth development, unrelated to the sclerotic process.