![](http://cdcssl.ibsrv.net/cimg/www.officitecuratedcontent.smb/191x289_85/401/prob_fluorosis-252401.jpg)
But sometimes, fluorosis occurs when fluoride-containing toothpastes or rinses are swallowed, instead of expelled.
Fluorosis causes a number of aesthetic problems, including abnormally darkened or stained teeth. While such problems are generally harmless to your health, they can create concerns with your appearance.