Question 591 · LDEK · Fluoride
Indicate the true statements regarding remineralization of a carious lesion:
1) a carious lesion covered by plaque has no chance of undergoing reminalizeration and being stopped;
2) the presence of F⁻ ions in the oral cavity promotes remineralization through the growth of pre-dissolved crystals and the deposition of fluoroapatites on their surface;
3) the continuous supply of low fluorine levels results in a less effective remineralization as compared to the supply of high fluorine levels;
4) a remineralized carious lesion is less resistant to acids.
The correct answer is:
2) the presence of F⁻ ions in the oral cavity promotes remineralization through the growth of pre-dissolved crystals and the deposition of fluoroapatites on their surface;
3) the continuous supply of low fluorine levels results in a less effective remineralization as compared to the supply of high fluorine levels;
4) a remineralized carious lesion is less resistant to acids.
The correct answer is:
- A. 1,2.
- B. 2,3.
- C. 3,4.
- D. 1,3.
- E. 2,4.
Hint
Recall why low, frequent fluoride concentrations are preferred and what mineral forms in a lesion that has remineralised.
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