Electro-therapeutics in medicine and surgery has been developed to a considerable degree, and may be said to form a very large and important element in the treatment of certain forms of disease, while in dental surgery it has received but little attention; in fact, it is almost a negative quantity in dental literature. Its application, however, in dental surgery, does not offer so broad a field for investigation, yet a study of its value as a remedial agent will be no less interesting than in other special departments of medicine, and when better understood will, I believe, become an important adjunct to the means already at our command for the treatment of a considerable number of dental and oral diseases. I have chosen as the topic of this paper, two out of several pathological conditions of the teeth to which the various forms of treatment by electricity may be beneficially