American Dental Association.Clinical Testing of Caries Preventives, pp. 8-15. Chicago: American Dental Association, 1955.
2.
Snyder, M.L., Suher, T., Porter, D.R., Claycomb, C.K., and Gardner, M.K.Evaluation of Laboratory Tests for the Estimation of Caries Activity, J. D. Res., 35:332, 1956.
3.
Klein, H., and Palmer, C.E.Studies on Dental Caries. X. A Procedure for the Recording and Statistical Processing of Dental Examination Findings, J. D. Res., 19:243, 1940.
4.
Jackson, D.An Evaluation of Two Methods of Caries Degree Estimation, Brit. D. J., 85:79,1948.
5.
Sandler, H.C.Relationship between Two Kinds of Measurements of Dental Caries, J. D. Res., 19:545, 1940.
Bruckner, R.J. , Hill, T.J., and Wollpert , B.J.Measurement of Dental Caries Incidence in School Children Using a Sodium Bicarbonate Dentifrice , J. D. Res., 31:105, 1952.
8.
Lefkowitz, W. , and Venti, V.I.A Preliminary Clinical Report on Caries Control with a High Urea Ammoniated Dentifrice, Oral Surg. , Oral Med., Oral Pathol., 4:1576, 1951.
9.
Marshall-Day, C.D., and Sedwick, H.J.Studies on the Incidence of Dental Caries , Dental Cosmos, 77:442, 1935.
10.
Henschel, C.J. , and Lieber,L. High-UreaAmmoniated Dentifrice: Caries Reduction through Four Years Home Use, Oral Surg., Oral Med., and Oral Pathol., 5:155, 1952.
11.
Dunning, J.M.Variability in Dental Caries Experience and Its Implication on Sample Size, J. D. Res., 29:541, 1950.
12.
James, P.M.C. , and Parfitt, G.J.An Investigation into the Relationship between Salivary and Lactobacillus Counts in Caries Experience, Brit. D. J., 97:83, 1954.