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1 Department of Dental Materials, Indiana University School of Dentistry, Indianapolis, Indiana
A means of testing the permeability of cavity liners to various electrolytes, including those leached from dental cements, has been evolved and described. Five commercial products of the varnish type were evaluated by this method, and results indicate that the passage of ions is greatly reduced, but not completely inhibited, by any of the materials. There was no discernible difference in the permeability of the different commercial products to a given compound.
Submitted on April 27, 1961
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