Dental review; devoted to the advancement of dentistry. . could have been obtained. Patients chronically affected, in such pain that they could notbear to move their arms, have been enabled after a very few sittingsto reach the back of their head. With regard to more serious diseases, I may again mention in ORIGINAL COMMUNICATIONS. 731 passing that Prof. Czerny, of Heidelberg, whose installation I hadthe privilege of inspecting through the courtesy of his assistant, Abetti, is closely investigating the effects of high frequency fi-gurations on cancers, with encouraging results. And now t
Dental review; devoted to the advancement of dentistry. . could have been obtained. Patients chronically affected, in such pain that they could notbear to move their arms, have been enabled after a very few sittingsto reach the back of their head. With regard to more serious diseases, I may again mention in ORIGINAL COMMUNICATIONS. 731 passing that Prof. Czerny, of Heidelberg, whose installation I hadthe privilege of inspecting through the courtesy of his assistant, Abetti, is closely investigating the effects of high frequency fi-gurations on cancers, with encouraging results. And now to our special branch. When I began to experimentwith high frequency currents in dentistry I only knew of a singleform of terminal; a straight glass tube filled with metallic filings;it conveyed the current to the mouth, but had the disadvantage of dis-charging in every direction, on teeth, gums, cheeks, etc. I then cov-ered the glass tube with a rubber tube, but found the insulation in-sufficient as the sparks would fly through two thicknesses of rubber. Fig. 5. Fig. 6. tubing. Fortunately I discovered that black vulcanite, about a quarterof an inch thick, sufficiently insulates the terminals, so I was able tomake the ones 1 am presenting, some of which I showed in most useful form is the horse shoe, as I can get it both sides ofthe gum at once. I use this generally for pyorrhea treatment. The last terminal I have constructed is a modification of dArson-vals coil; the current passes through it without appreciably discharg-ing on the tissues, yet manifesting its influence on the part by adiminution cf blood pressure. 732 THE DENTAL REVIEW. Fig. 6. I find this a particularly useful form in reducing con-gestive condition of the gums, allaying pain, etc. I spoke before of the soothing effects of these applications incases of neuralgia connected with dental troubles; I am glad to reportthat in all cases where I have used these currents for the relief ofpain, I have obtain
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