Kehoe, R.A., Cholak, J., and Story, R.V.: A Spectrochemical Study of the Normal Ranges of Concentration of Certain Trace Metals in Biological Materials, J. Nutrition19: 579, 1940.
2.
Dundon, C.C. , and Hughes, J.P.: Stannic Oxide Pneumoconiosis, Am. J. Roentgenol. 63: 797, 1950.
3.
Lowater, F., and Murray, M.M.: Chemical Composition of Teeth. V. Spectrographic Analysis, Biochem. J. 31: 837, 1937.
4.
Muhler, J.C. , and Van Huysen, G.: Solubility of Enamel Protected by Sodium Fluoride and Other Compounds, J. D. Res. 26: 119, 1947.
5.
Muhler, J.C. , Boyd, T.M., and Van Huysen , G.: Effect of Fluorides and Other Compounds on the Solubility of Enamel, Dentin and Tricalcium Phosphate in Dilute Acids, J. D. Res. 29: 182, 1950.
6.
Muhler, J.C. , and Day, H.G.: Relation of pH to the Effectiveness of Sodium Fluoride and Stannous Fluoride in Decreasing Enamel Solubility, J. D. Res. 31: 102, 1952.
7.
Muhler, J.C. , Nebergall, W.H., and Day, N.G.: Studies on Stannous Fluoride and Other Fluorides in Relation to the Solubility of Enamel in Acid and the Prevention of Experimental Dental Caries, J. D. Res. 33: 33, 1954.
8.
Muhler, J.C. , and Day, H.G.: Effects of Stannous Fluoride, Stannous Chloride and Sodium Fluoride on the Incidence of Dental Lesions in Rats Fed a Caries-Producing Diet, J. A. D. A. 41: 528, 1950.
9.
Muhler, J.C. , Nebergall, W.H., and Day, H.G.: Preparations of Stannous Fluoride Compared With Sodium Fluoride for the Prevention of Dental Caries in the Rat, J. A. D. A. 46: 290, 1951.
10.
Muhler, J.C. , and Day, H.G.: Effect of Stannous Fluoride in Food and in Drinking Water on Caries Prevention in Rats on High Sucrose and Coarse Corn Diets, J. Nutrition44: 413, 1951.
11.
Manly, R.S. , and Bibby, B.G.: Substances Capable of Decreasing the Acid Solubility of Tooth Enamel, J. D. Res. 28: 160, 1949.
12.
Ericsson, Y. : Reduction of the Solubility of Enamel Surfaces, Acta. Odont. seandinav. 9:60, 1950-1951.
13.
Howell, C.L. , Gish, C.W., Smiley, R.D., and Muhler, J.C.: Effect of Topically Applied Stannous Fluoride on the Dental Caries Experience in Children, J. A. D. A. 50: 14, 1955.
14.
Muhler, J.C. , Radike, A.W., Nebergall, W.H., and Day, H.G.: Effect of a Stannous Fluoride Containing Dentifrice on Caries Reduction in Children. Caries Experience After One Year , J. A. D. A. 50: 163, 1955.
15.
Fisher, R.R. , Muhler, J.C., and Wust, C.J.: Effects of Several Fluoride Reagents on the Surface Structure of Powdered Dental Enamel, J. D. Res . 33: 50. 1954.
16.
Brudevold, F., Gardner, D.E., and Smith, F.A.: The Distribution of Fluoride in Human Enamel , J. D. Res. 35: 420, 1956.
17.
Massler, M. , and Barber, T.K.: Action of Amalgam on Dentin, J. A. D. A. 47: 415, 1953.
