MedMigrant

Question 501 · LDEK · Etiology and pathogenesis of caries

Indicate false statements about root caries:

1) exposed cementum and dentin, are less mineralized than enamel and more susceptible to carious agents;
2) the microflora of root caries is different from the microflora associated with enamel caries;
3) the critical pH at which root dentin dissolution occurs is 5.0–5.5;
4) the freshly exposed root surface has a lower fluoride concentration than enamel.
  1. A. 1,2.
  2. B. 2,3.
  3. C. 3,4.
  4. D. 1,3.
  5. E. 1,4.
Hint

Compare the critical pH of root dentin with that of enamel, and recall the fluoride content of surface cementum.

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