Dental electro-therapeutics.

  • Sturridge, Ernest, 1864-1948.
Date:
1914
Catalogue details

Licence: Public Domain Mark

Credit: Dental electro-therapeutics. Source: Wellcome Collection.

Provider: This material has been provided by the Harvey Cushing/John Hay Whitney Medical Library at Yale University, through the Medical Heritage Library. The original may be consulted at the Harvey Cushing/John Hay Whitney Medical Library at Yale University.

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    Accumulator Battery.—For cautery work and lighting small mouth lamps, antrum lamps, and working the dental engine, this form of battery is one of the most useful. The principle of the accumulator cells has already been de- scribed. For cautery two to six cells are connected in parallel and they need not be of large size, the cells have an E. M. F. of 2 volts each and the current strength will vary according to the capacity of the cells. When formed Fig. 38 Accumulator battery for cautery. into a battery there should be a sliding contact rheostat to turn on the current gradually to suit the size of the cautery or lamp that is being used. Many of the small batteries have a capacity of 50 ampere hours which under ordinary circumstances will do service in a dental surgery for a long time. The accumulator battery is superior to a chemical cell battery for surgical work or light. For working an ordinary motor dental engine which is