Author: H. P. Pickerill

Publisher: Forgotten Books

Published: 2015-06-24

Total Pages: 396

ISBN-13: 9781330092576

Excerpt from The Prevention of Dental Caries and Oral Sepsis The fact of the first edition being exhausted in the year following its publication has allowed but small opportunity for the insertion in the present edition of much that I had hoped to include, more especially in relation to work being done by others along similar lines in America, particularly by Drs. Gies, Lothrop, and Howe, and my own investigation into the cause of immunity in less civilized Maori children. Nevertheless, some fresh subjects have been broached in the present edition. These include accounts of our investigations into the bacteriology of the mouths of immune Maori children, the anatomy and physiology of mastication, thyroid insufficiency and dental caries, and the relationship between oral and other alimentary secretions. These subjects are dealt with in Chapters III., IV., XIII., and XVII. respectively. Also, additional experiments are described bearing on the solubility of the enamel surface in carbon dioxide, the neutralizing powers of tooth substance and saliva, the viscosity of saliva, the action of sulphocyanates in saliva, the digestion of starch, the effects of sugar-cane, white bread, and whole-meal bread on the teeth. Considerable additional evidence has been collected showing the lack of toughness or of fibrous elements in the food of races immune to caries. A number of fresh illustrations are also included. This work has grown so largely since its inception that its original claim to be the R.C.S.E. Cartwright Prize Essay for 1910 can no longer be sustained. My sincere thanks are due to my friend Mr. R. H. Pardoe for his invaluable assistance in seeing both editions through the press, and to the publishers for the courtesy and thoroughness with which the wishes of the author have been carried out under the somewhat difficult circumstance of his being fourteen thousand miles away. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.