Dr. Frederick McKay, American dentist

Dr. Frederick McKay, American dentist

H413/0332 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 25.0MB

Downloadable file size: 1.3MB

Price image Pricing

Please login to use the price calculator


Credit: CDC/SCIENCE PHOTO LIBRARY

Caption: Dr. Frederick McKay (1874-1959), American dentist. Upon setting up a dental practice in Colorado, USA, at the beginning of the 20th century, McKay noticed that a lot of his clients had brown stains on their teeth. The cause was unknown, but they referred to this as Colorado brown teeth. McKay also noted that those with the brown stains exhibited resistance to tooth decay. He isolated the cause of the stains as small amounts of fluoride in the water supply. His research also showed that levels less than one part per million did not cause the staining and significantly lessened the risk of cavities. As a result of his work, fluoride is routinely added to tap water throughout the world.

Release details: Model release not available. Property release not required.

Keywords: 1900s, 20s, 20th century, 30s, adult, american, biological, biology, black-and-white, caucasian, colorado brown teeth, dead, dentist, dentistry, dr frederick s. mckay, fluoridation, fluoride, fluorosis, frederick mckay, historical, history, human, male, man, medical, medicine, monochrome, odontology, preventative medicine, prevention, public health, researcher, scientist, thirties, tooth decay, twenties, us, water supply

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.