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1 Indiana University School of Dentistry, Indianapolis, Ind.
There is available no basic information on the electric conductivity of dental cements and the influence played by such variables as composition, liquid-powder ratio, and thickness. This has been a discussion of the instrumentation, circuit design, and cell construction which have been developed for accurately measuring the electric conductivity. A few preliminary experiments were summarized to show the resistance pattern on aging of the cement specimen. No attempt should be made at this stage to interpret the practical significance of these data in terms of the cement's resistance to electric energy. Further tests under different conditions will be required.
Submitted on May 15, 1953
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