Any difference between fluorosis and demineralization?

Yes. Fluorosis is characterized by stains on the teeth because of high amount of fluoride...Demineralization if the breakdown of enamel, which can also be characterized by stain/change in color.

Related Questions

How to tell the difference between fluorosis and demineralization?

Difference in hardne. In fluorosis the tooth is actually harder; the enamel is stronger. In demineralization the enamel has 'soft' spots that appear as pre-cavities with an explorer. Read more...