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Journal of Dental Research, Vol 56, 1161-1164, Copyright © 1977 by International & American Associations for Dental Research Online Journals

ARTICLES

Dentin permeation: comparison of diffusion with filtration

V. A. Merchant, M. J. Livingston and D. H. Pashley

A comparison was made between the rate of iodide permeation of dentin by diffusion and by filtration. Before acid etching, filtration only doubled the rate of iodide permeation relative to that obtained by diffusion. After acid etching, filtration produced a 32-fold increase in permeation. Acid etching, by removing occluding debris, facilitates filtration more than diffusion.




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