The Aurora-Rockford, Ill., Study II. Effect Of Natural Fluoride on the Periodontal Health of Adults Harold R. EnglanderD.D.S.M.P.H., Robert G. KeselD.D.S.M.S.F.A.P.H.A., and Om P. GuptaB.D.S.Dr.P.H. CopyRightAt the time of this study the authors were associated with the University of Illinois College of Dentistry, Chicago, Ill. Dr. Englander is presently with the Epidemiology and Biometry Branch, National Institute of Dental Research, Bethesda, Md. https://doi.org/10.2105/AJPH.53.8.1233 Published Online: August 29, 2011
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Englander et al. (1963) studied this question.
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