History of fluorine, fluoride and fluoridation

Time 2020-11-04 06:02:54

Web Name: History of fluorine, fluoride and fluoridation

WebSite: http://www.fluoride-history.de

ID:104318

Keywords:

fluorine,of,History,Fluor,Fluorine,Flourine,Fluorid,Flourid,Fluoride,Fluoridatio

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Hearing of "fluorine" or "fluoride" most people now think instantly of dentistry, of dental caries or the different ways of fluoride application to prevent that disorder. But these terms are not inventions of dentistry, nor was the use of fluorides originally in any way related to that profession. ...-- [deutsch] In the 19th century, research on fluoride and its occurrence in teeth and bones was carried out by physicians and chemists in Europe while the dental profession was still not organized as we know it today. The analytical methods of the time were quite limited and the results rather controversial. Thus, the early recommendations to take fluoride pills to prevent dental caries were based on anything but sound science and -then already- subject to heated debates... more While some physicians dedicated considerable time to dental research, the medical profession as a whole apparently neglected the treatment of dental disorders which they regarded as rather superficial troubles of short duration and very rarely life-threatening. Therefore, dental treatments were also performed for a long time by so-called "craftsmen" . In 1859, the latter organized the American Dental Association. The new profession approached a certain scientific status due to research on mottled teeth ... more Mottled teeth - the F. S. McKay era of dental research When dentist Frederick Sumner McKay moved to Colorado Springs, in 1901, he noticed on the teeth of most of the natives strange discolorations, "Colorado Brown Stain" as the local people used to call it after the most prominent and disturbing feature of the affliction. Also from a hygienic point of view the teeth were in a deplorable condition, as opposed to certain anecdotes ... more Not Colorado Springs but Oakley, Idaho, was the first community to change its water supply solely to get rid of a disfiguring dental problem. It s some of the inhabitants and a caring Director of Public Health who deserve the highest respect for the responsible action taken. They did the right thing but the cause of the trouble was still unknown, despite some animal experimentation ... more In 1931, H. V. Churchill, a chemist at the Research Laboratories of the Aluminum Company of America (ALCOA), New Kensington, announced the find of fluoride in the water of areas where people had mottled teeth. This discovery came as a surprise, for the Company became involved when some facts pointed to aluminium as a possible cause of the trouble. ... more What they say about how fluoridation started "... A strong uproar was heard when this was released and people wanted all fluorine out of their water. But later tests concluded that communities with high levels of fluorine in their drinking water suffered less dental cavities." ... more The U. S. Public Health Service (USPHS) initiates dental research When Henry Trendley Dean, DDS, was transferred to the US Public Health Service Head Quarters in Washington, D.C., for a study of the distribution of mottled enamel and to find economic means for its prevention, he had already shown his research capabilities: in 1929 he presented before the American Dental Association's research commission his analysis of fifty cases of fractures of the mandible. He had also been part of a team that investigated, between 1929 and 1930, the health effects of radium dial painting (results published in 1933). ... more H. T. Dean s special epidemiology of mottled teeth The "very mild" category described by Dean in 1934 shows "no brown stain" while according to the 1935 and 1938 descriptions brown stain is "rarely observed" and "faint" (as it was in the "mild" category described in 1934); in 1942, "brown stain" appears only in the descriptions of the "moderate" and "severe" categories. ... more ----- Fluoride Safety Studies: Bartlett -Cameron vs. Newburgh-Kingston Somehow it was to be expected that mottling and staining of the teeth would not be the only toxic effect of fluoride, though this was apparently the only one within the scope of dentistry. After the examination, in February 1932, of a group of children in Minonk, Illinois, Henry Trendley Dean wrote in his report to the Surgeon General: "Following the Minonk examination, a new phase of this question seems ripe for further study. Is mottled enamel merely an oral manifestation of a general toxicity, or something similar?" ... more Unethical fluoride tests in Massachusetts The "Sunday Cape Cod Times" of January 2, 1994, claims under the headline "Mentally retarded children given fluoride before legal" that, in the 1940 s, the Massachusetts public health department recommended to the legislature that fluoridation be studied at some state institutions, including schools for mentally retarded ..more Fluoridation Chemicals Sodium fluoride, sodium fluosilicate and (hydro)fluosilicic acid are not the only compounds used for water fluoridation. Late in the 1950 s, Franz J. Maier and Ervin Bellack, of the U.S.P.H.S., developed a "fluorspar dissolver" which yields a concoction very similar to Wayne White s "Flural": fluoroaluminates... more Sodium monofluorophosphate was for the first time prepared in 1929 by Willy Lange, a Privatdozent at the Friedrich-Wilhelms- University of Berlin. His search for ways to prepare the free monofluorophosphoric acid led Lange to derivatives that soon would become known as nerve agents. Upon heating silver monofluorophosphate with methyl or ethyl iodide Lange and one of his Ph.D. students, Gerda von Krueger, prepared the corresponding dialkyl monofluorophosphates which exerted a strong action on the authors. Lange felt these compounds might be useful for pest control and offered them to I. G. Farben Industry for evaluation. But the company apparently had no interest at that time. Within two years I. G. Farben changed its mind and began its own developmental program - with Gerhard Schrader. ... more Fluoride in dental fillings After clinical observations and animal experimentation it became soon obvious "that silicate cements exert a harmful effect on the dental pulp. That this damage must be attributed to the irritating qualities of silicate cement and not to the operative procedures of cavity preparation is apparent." ...more Literatur: Bücher, Broschüren und historische Sammlungen Eine Liste von Büchern und historisch interessanten Sammlungen zum Thema Fluor, Fluoride und Fluoridierung im PDF-Format. A list of books, booklets, special journal issues, and collections of papers compiled for those who want more info on the history of fluoride and fluoridation. - PDF-File --- How I became interested in fluoride In a TV discussion on fluoride a dentist vehemently defended the application of fluoride tablets to babies for caries prevention, but as soon as the cameras went off he told me: "Mr. Meiers, in a few years us dentists will ask how could we have ever gotten involved in this fluoride matter ". ... [deutsch] - Allfiles arecontinuously updated asmorematerial is evaluated -- (C) PeterMeiers - http://www.fluoride-history.de - [imprint / contact]

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