What're the internal white spots on my two front teeth?

Fluorosis: They are called fluorosis and they are really changes in the mineral composition in the enamel. Sometimes they are there naturally sometimes you get them after you have had braces placed again because of changes in the mineral composition of teeth.

Demineralization: White spots are areas of the teeth that are missing some of the minerals in the teeth. This can occur when the teeth are developing and enter the mouth. Some areas of the country have too much flouride in the water and in the early stage of flourosis the teeth will be white before the turn brownish.