kev tshawb fawb txog tshuaj fluoride tau pib thaum xyoo 1901, thaum lub tsev kawm kho hniav hluas kawm tiav npe Frederick McKay tawm sab hnub tuaj ntug dej hiav txwv los qhib kev kho hniav hauv Colorado Springs, Colorado. Thaum nws tuaj txog, McKay xav tsis thoob thaum pom cov qhab nia ntawm Colorado Springs cov neeg nyob nrog cov xim av grotesque ntawm lawv cov hniav.
Leej twg pom fluorosis?
Ib puag ncig ntawm lub xyoo pua 20th, Colorado kws kho hniav Dr. Frederick S. McKay pom ntau tus neeg mob muaj qee yam hu ua hniav fluorosis, uas ua rau staining ntawm cov hniav.
fluorosis tuaj qhov twg?
Dental fluorosis yog tshwm sim los ntawm noj cov tshuaj fluoride ntau dhau lub sijhawm ntev thaum cov hniav tsim hauv qab cov pos hniav. Tsuas yog cov menyuam yaus hnub nyoog qis dua 8 xyoos thiab qis dua yuav muaj kev pheej hmoo vim qhov no yog thaum cov hniav mus tas li; Cov menyuam yaus hnub nyoog qis dua 8 xyoos, cov hluas, thiab cov laus tsis tuaj yeem tsim kho hniav fluorosis.
Dr Frederick McKay yog dab tsi?
Frederick S. McKay. Xyoo 1931, Dr. McKay tau tshawb pom tias qib siab ntawm fluoride hauv cov dej haus ntawm Colorado Springs cheeb tsamua rau cov xim av xim av, nrog rau kev tiv thaiv cov hniav lwj ntawm cov neeg nyob hauv ib txwm muaj., ua rau cov txheej txheem fluoridation.
Leej twg tsim cov tshuaj fluoride hauv cov tshuaj txhuam hniav?
Kws kho hniav thiab biochemist Joseph Muhler thiab inorganic chemist William Nebergall tsim cov khoom tiv thaiv kab noj hniav siv stannousfluoride, tsim kev tshawb fawb pib nyob rau hauv 1940s ntawm Indiana University los ntawm ces-undergraduate Muhler thiab biochemistry professor Harry Day.
