The authors here present a compendium of essential information on dental diseases. The volume focuses on statistical data accumulated since the earliest efforts to quantify the dental caries problem in the 1930s. The five main topics are “Dental Caries” by John B. Dunbar, Director of the Urban Institute, University of Alabama at Birmingham; “Periodontal Disease” by Russell S. McMillan, Associate Professor, University of Southern California and Albert E. Wolff, Associate Professor, University of Alabama Medical Center and School of Dentistry; “Oral Cancer” by Walter J. Pelton, Professor, University of Alabama School of Dentistry; and “Malocclusion” and “Cleft Lip and Palate” by Palmi Moller, Associate Professor, University of Alabama School of Dentistry.