NCIt definition : A condition that results from excessive fluoride ingestion during tooth development,
resulting in tooth discoloration ranging from white streaks to brown stains and cracks
or pits in the tooth enamel.;
Alternative definition : NICHD: A condition resulting from excessive fluoride ingestion during tooth development
resulting in tooth discoloration ranging from white streaks to brown stains, and possible
cracks or pits in the enamel.;