The author was the first recipient of the William J. Gies award from the American College of Dentists for “a wisely planned series of scientific inquiries into the composition of sound teeth and the incidence of dental caries.”Professor Brekhus served on the faculty of the University of Minnesota for 31 years, taught postgraduate courses in Norway and Finland, and was a member of Sigma Xi and other scientific fraternities in the United States and in several foreign countries.The author writes, “My main objective is the enlightenment of the people as a whole who for decades have been told a great many things about their teeth that are not so. The book will be helpful to public health educators and social workers. It should challenge dentists to look upon their problems from a broader point of view.”His book gives suggestions for future research and a program to meet this most pressing public health problem.