A Reproducible Method for Caries Evaluation

Backer Dirks , 0., van Amerongen , J. , and Winkler, K.C. : A Reproducible Method for Caries Evaluation, J. D. Res. 30: 346, 1951.

Winkler, K.C. , Backer Dirks, 0. , and van Amerongen, J. : A Reproducible Method for Caries Evaluation. II. Test in a Therapeutic Experiment. To be published.

Stephan, R.M. : The Effect of Urea in Counteracting the Influence of Carbohydrates on the pH of Dental Plaques, J. D. Res. 22: 63, 1943.

Kesel, R.G. , O'Donnell, J.F. , Kirch, E.R. , and Wach, E.C. : The Biological Production and Therapeutic Use of Ammonia in the Oral Cavity in Relation to Dental Caries Prevention, J. A. D. A . 33: 695, 1946.

Stephan, R.M. : In Vitro Studies of the Effects of Some Chemical Substances on the Growth of Oral Microorganisms and on Their Ability to Dissolve Tooth Salts, J. D. Res. 28: 652, 1949.

Kirchheimer, W.F. , and Douglas, H.C. : The Failure of Ammonium Ions to Inhibit the Growth of Oral Lactobacilli, J. D. Res. 29: 320, 1950.

Pearlman, S. , and Hill, T.J. : Influence of Ammonia and of Urea Upon L. Acidophilus 4646, J. D. Res. 30: 542, 1951.

Pearlman, S. : Influence of Ammonia and of Urea Upon L. Acidophilus 4646. II. Studies on Anaerobic Glycolysis, J. D. Res. 30: 656, 1951.

Stephan, R.M. , and Miller, B.F. : Effectiveness of Urea and Synthetic Detergents in Reducing Activity of Human Dental Caries, Proc. Soc. Exper. Biol. & Med. 55: 101, 1944.

Goodfriend, D.J. : A Practical Method for Prevention of Dental Caries, J. A. D. A. 37: 511, 1948.

Henschel, C.J. , and Lieber, L. : Caries Incidence Reduction by Unsupervised Use of 27.5 Per Cent Ammonium Therapy Dentifrice, J. D. Res . 28: 248, 1949.

Kesel, R.G. , O'Donnell, J.F. , Kirch , E.R. , and Wach, E.C. : Ammonia Production in the Oral Cavity and the Use of Ammonium Salts for the Control of Dental Caries, Am. J. Orthodontics (Oral Surg. Sect.) 33: 80, 1947.

Kesel, R.G. : The Effectiveness of Dentifrices, Mouthwashes, and Ammonia-Urea Compounds in the Control of Dental Caries, J. D. Res. 27: 244, 1948.

Kerr, D.W. , and Kesel, R.G. : The Conduct and Results of a Two-Year Caries Control Study Utilizing Oral Hygiene and an Ammoniated Dentifrice, J. A. D. A. 42: 180, 1951.

Davies, G.N. , and King, R.M. : The Effectiveness of an Ammonium Ion Toothpowder in the Control of Dental Caries, J. D. Res . 30: 645, 1951.

Bibby, B.G. , and Nevin, T.A. : The Effectiveness of Ammoniated Dentifrices in Reducing Oral Lactobacillus Counts, J. D. Res . 30: 503, 1951.

Julius, H.W. : A Method for the Estimation of the Number of Viable Bacteriae (Dutch text), Vol. 5, 1938, Antonie v. Leeuwenhoek, p. 28.