Diseases of the soft structures of the teeth and their treatment; a text-book for students and practitioners . lowamperage and medium voltage, intended for wireless telegraphy,have been placed on the market. These cells arc also useful for dental electro-Sterilization. The cells are mounted in series and connected to binding-posts. From these posts the current is - veyed by means of flexible conducting cord- to a suitable controller. The most important feature of a serviceable controller consists in the gradual increase or de« rease of the current in very small frac-tion- of a millianipere wit
Diseases of the soft structures of the teeth and their treatment; a text-book for students and practitioners . lowamperage and medium voltage, intended for wireless telegraphy,have been placed on the market. These cells arc also useful for dental electro-Sterilization. The cells are mounted in series and connected to binding-posts. From these posts the current is - veyed by means of flexible conducting cord- to a suitable controller. The most important feature of a serviceable controller consists in the gradual increase or de« rease of the current in very small frac-tion- of a millianipere without shocking the patient. A graphiteor a -eric- wire rheostat, cither plain or as a shunt, is serviceablefor such pun- l The markings on the current controller Fig. L12), be they volts or arbitrary numbers, have little bearing on thepractical application of the current. NECROSIS AND GANGRENE OF THE DENTAL PULP 205 The current controller, in turn, is connected with a milliampere-meter, an instrument for measuring the quantity or strength ofthe current. The milliamperemeter is the instrument of precision. Fi<;. 112.—The S. S. White current controller. which guides the operator in his work, consequently too muchemphasis cannot be placed upon the importance on obtaining aperfect working instrument.
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Keywords: ., bookcentury1900, bookdecade1920, bookiddiseasesofso, bookyear1922
