NBDE Review Questions: Quiz 56

The differential diagnosis of enamel hypoplasia should take into account suggested differences between non-fluoride and fluoride opacities. Which of the following statements does not suggest a basis for a diagnosis of non-fluoride (NF) enamel hypoplasia?
- A. Levels of F in drinking water that range from 0.2 to 0.34 ppm have been reported to be associated with prevalences of NF enamel opacities ranging from 22% to 35 %.
- B. At a level of 1 to 1.5 ppm of F in drinking water, only few F opacities occur.
- C. Most NF enamel opacities appear as white, opaque spots in smooth surface enamel; areas of mild dental fluorosis are lusterless, opaque white patches.
- D. Fluorosis and NF opacities are clinically significantly different.