Tehran University of Medical Sciences Iranian Journal of Public Health 2251-6085 10 1-4 1981 06 15 37 44 K.Imandel M.Semsar Yazdi M.Ghiasseddin 2015 10 03 A survey of mottled enamel in a military educational center in Karaj area of metropolitan Tehran was conducted from August to September 1978, on a population of 1789 student, aged 18-23 gathered from 32 areas of Iran. Dean clinical standards used for diagnosing dental fluorsis and Orion lonalyzer Fluoride Electrode was used to determine the fluoride content of communal waters of endemic areas. The conclusion asserted is that the index of dental fluorsis in the population under the study is 0.04. The survey showed 15 mottled enamel area in Iran, with fluouide concentration of domestic and drinking water from 0.7 to 3.8 ppm. https://ijph.tums.ac.ir/index.php/ijph/article/view/2814 https://ijph.tums.ac.ir/index.php/ijph/article/download/2814/2794