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  • Title: Improved fluoride incorporation and new in vitro fluorine elemental determination.
    Author: Rajan KS, Raisen E, Mandler JW, Riley DL, Semmler RA.
    Journal: J Dent Res; 1976; 55(4):671-7. PubMed ID: 1064614.
    Abstract:
    The CPA technique was shown to be very useful in nondestructively determining the concentration profiles of fluoride in extracted teeth. By means of this technique, it was found that in vitro treatment with K2ZrF6 incorporated substantially more fluoride into the enamel than NaF or APF by factors of 5 and more than 50, respectively. The concentration profile was determined from the tooth surface to a depth of 2.1 mum, with a resolution of 0.07 mum at the surface and 0.15 mum at a 2.1-mum depth. Proton-stimulated X-ray fluorescence was used to detect the elements heavier than Mg, for example, P, Cl, K, Ca, Ti, Fe, Ni, Ca, Zn, Zr, and Pb.
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