Matches in DBpedia 2016-04 for { ?s ?p "The history of water fluoridation can be divided into three periods. The first (c. 1901–33) was research into the cause of a form of mottled tooth enamel called the Colorado Brown Stain, which later became known as fluorosis. The second (c. 1933–45) focused on the relationship among fluoride concentrations, fluorosis, and tooth decay."@en }
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- History_of_water_fluoridation comment "The history of water fluoridation can be divided into three periods. The first (c. 1901–33) was research into the cause of a form of mottled tooth enamel called the Colorado Brown Stain, which later became known as fluorosis. The second (c. 1933–45) focused on the relationship among fluoride concentrations, fluorosis, and tooth decay.".
- Q5871064 comment "The history of water fluoridation can be divided into three periods. The first (c. 1901–33) was research into the cause of a form of mottled tooth enamel called the Colorado Brown Stain, which later became known as fluorosis. The second (c. 1933–45) focused on the relationship among fluoride concentrations, fluorosis, and tooth decay.".