Use of salt of Hydrofuoric acid for the Prevention of Dental Caries is not an advisable treatment

Abstract

Water soluble salt of hydro-fluoric acid are applied to teeth for the purpose of preventing dental caries and the following results were obtained:
(1) . Resistance to weak acids, such as organic acids, is lowered by means of application of water soluble salt of hydro-fluoric acids.
(2) . Teeth become more brittle.
(3) . When these water soluble salt of hydro-fluoric acid are absolved into the body, the soluble calcium salt in the body are converted into insoluble salts and brings about a condition where the body is lacking in calcium with resulting disorders. Furthermore, the presence of excessive amounts of fluoride is directly deleterious to the human body.
(4) . As long as water soluble compounds of fluorine are in the mouth, developement of micro-organisms is hindered and therefore prevents the formation of acids. Therefore it is clear that only in Case 4 is the prevention of caries carried out by preventing oval fermentation. Cases 1, 2 and 3 show that the use of fluorine compounds is disadvantageous.
If only the object is to prevent formation of acids, one can use some other harmless substance beside sodium fluoride.
Furthermore, fluorine is usually considered to be not necessary for mammalia. Therefore, the conclusion is that it is not advisable to use compounds of fluorine in the prevention of dental caries.