One symptom of fluorosis in humans is mottled teeth.

Dentists first gleaned the power of fluoride when they noticed that some patients had oddly mottled teeth that were resistant to cavities.

Grotesque monsters loomed in it, snapping their mottled teeth, and rogue winds threatened to capsize tiny boats containing helpless women and children.

But Wilson's clear eyes were Scots, and not smiling at all despite the baring of mottled teeth, while Roosevelt's face was like a carved coconut of the sort carried into battle by Polynesian warriors.

Health Effects Some people who drink water containing fluoride in excess of the MCL over many years could get bone disease (including pain and tenderness of the bones); children may get mottled teeth.